A Lemon Cordial Follow Up!

My most amazing, wonderful, awesome daughter read my previous post on the Lemon Cordial, made from an 18^th century recipe, that used milk in the process.  In doing so, she recalled an article from Cook’s Illustrated titled “The Key to Crystal-Clear Cocktails? Milk. (Really.)”  It was written by Camper English and published in December, 2016.

The article focused on an old technique to make a “milk punch”:

The base recipe for milk punch includes citrus juice or another acidic ingredient. Milk (usually hot milk) is added to the mixed cocktail, curdling the milk, and then the punch is strained to remove the curds. The process removes most of the color and cloudiness from the drink, clarifying it, and it preserves the cocktail from spoilage for months or even years if kept cool.

The recipe I followed required sliced lemons to be put in milk then heated until the mixture forms curds and whey.  This is strained, and the resulting liquid is mixed with sugar and brandy to form the cordial.  I expected large curds that were distinct from the whey (the recipe said to boil the milk until the whey was “very clear”) but I never saw that because the curds were all small.

I tried filtering out the curds through cheesecloth, but that didn’t work.  I decided to add the brandy and sugar while hoping the cordial would taste right.  The curds started settling out, and the whole appearance was not appealing.  It was then I decided to filter it using a cloth bag. 

The result was a very clear and delicately flavored cordial that tasted of brandy and lemon with a good mouthfeel from the sugar.  I noticed (but did not mention in the post) that the curds had taken on the color of the brandy, and that the cordial was lighter in color after it was filtered.

Mr. English continues with:

The concept of clarifying cocktails with milk might seem a bit odd today, but in the milk punch heyday—the 1700s through the mid-1800s—spirits would have been far rougher around the edges than those we enjoy today, and in addition to clarifying and preserving the drink, the process also softened the harsh flavor of the booze. The resulting drink is unctuous and silky, clear and only subtly milky, with softer, mellow flavors.

What a surprise!  In doing the wrong thing with the original recipe, I stumbled across an historical technique.

Mr. English also tells us:

The earliest known milk punch recipe, as reported by cocktail historian David Wondrich in his book Punch, dates to 1711, and is attributed to housewife Mary Rockett. That recipe calls for a gallon of brandy, five quarts of water, eight lemons, and two pounds of sugar. To it, two gallons of scalding hot “new milk” are added, and after an hour, it is strained through a flannel bag.

He goes on to report on the variations professional bartenders are exploring today:  heating the milk or not, trying a variety of milks (animal and nut), changing the order of the steps, and more.  We are also treated to the science underlying the process, to help us understand the importance of the curds in stripping out the tannins, for example.

The article is a great read and brought insight to me on the lemon cordial recipe.  I recommend reading it!

Now I wonder why the cordial recipe required straining the curds before adding the brandy.  I can understand adding the sugar after straining – otherwise it makes the liquid very thick and slows down the straining process.  If, as Mr. English notes, the brandy in the 1700s was “rougher around the edges than those we enjoy today”, it seems the cordial would taste better if the brandy also came into contact with the curds. 

But perhaps that wasn’t the goal.  Perhaps the goal was to infuse the whey with the lemon flavor, which happens faster than infusing the alcohol with the lemons.  Once it was mixed with the brandy and sugar, you had a nice beverage.

When I put the sliced lemons – pulp, white, seeds, and peel – into the milk, I wondered if the white would make it taste bitter.  Perhaps the curds removed the bitter, and that was another advantage of using milk. 

To say I was as pleased as punch to read this article is an understatement.

A Lemon Cordial - with milk

I was perusing a book in my collection that caught my attention (again) because it had nothing printed on the spine.  But it did have print on the front cover and that was A Book of Cookery.  It is an intriguing book because the author, Kimberly K. Walters, does historical reenactment, and she compiled these recipes from a variety of historical sources to aid her reenactment work.

ISBN 978-0-692-26980-0

Her focus is the 18th century, the American Revolutionary War, and George Washington, but she notes in the "Forword" that she sometimes took from sources just before and after that time when she felt it was appropriate.  

The book contains more than just recipes, which she properly calls "receipts."  It also offers information on how to choose good food items, lists of what items are in season "in the colonies", a detailed description of how and what to serve for dinner courses ("removes"), how the table is to be set, and descriptions of cooking equipment.

As someone who has experience in historical cooking reenactment, I would judge this book to be quite valuable to anyone who wants to learn how to be a Colonial American cooking reenactor.  All you would have to add is equipment, costuming, and a location in which to cook.  

I had fun reading through the recipes.  My goal was to find one that used lemons because my neighbor had left a bag full of them on my doorstep.  There were several recipes that I considered, especially the Lemon Gingerbread on page 190, but I decided to try the Lemon Cordial on page 260.  I have made many cordials and liqueurs before but never one that had milk in it.  I wanted to see what it was like.

Lemon Cordial

Cut six fresh lemons in thin slices, put them into a quart and a half of milk, boil it until the whey is very clear, then pass it through a sieve; put to this whey, one and a half quarts of French brandy, and three pounds of powdered loaf sugar; stir it till the sugar is dissolved - let it stand to refine, and bottle it; pare some of the yellow rind of the lemons very thin, and put a little in each bottle. (Randolph).

My Notes

I decided to scale the recipe down a little.  "A quart and a half" is 6 cups, so the proportions for 2/3 of the amounts are pretty straightforward:

4 lemons (washed!)

4 cups milk

4 cups brandy

2 pounds powdered sugar

After the lemons were sliced and the milk was added, I turned the heat onto high to get the cooking going.  

I notice the curdling started right away.  This is a good thing!  It is how you get the curds and whey.

You can see the curds forming.

Once I saw some bubbles forming in the milk, I turned the heat to medium low.  

And this is where I started running into trouble.  You see, I have made curds and whey before with milk and vinegar (click here to see the post), so I expected the curds to be big and to clearly see the whey.

But that didn't happen here.  I let the mixture simmer for quite a while (a few hours!) and never saw the whey separate as I expected.  After the lemons looked very cooked, I turned the heat off and thought about what to do.

The lemons have gone limp. 

The curds were all tiny.  There was whey but everything was mixed.  I decided to pass it through a strainer lined with cheesecloth, but I was not confident this would work.

And it didn't.  Very little liquid came through; it all looked like it was still captured in the curds and lemon.

Then I decided to use some more fresh milk (1 cup) to rinse the curds off of the lemon slices, with hope I could get all that to sieve out.  I used my hands to gently squeeze the slices and to wipe the curds off of them.  This got the curds off the lemons but it still would not get the moisture out of the curds.  I had a thick, creamy liquid now.  I threw away the lemon slices.

At this point I thought that I would just have to expect a creamy, curdy cordial.  Maybe that would taste good?  So I added the powdered sugar and the brandy, mixing well.

This is a one-half gallon container

I tasted it and it was good!  But I didn't think this was supposed to be the desired result.  The container sat on the counter overnight.  The next day I saw that the curds had begun to settle -- and it was forming layers of what looked like curds in liquid at the bottom, liquid alone in the middle, and a foam on the top.  It made me think of syllabub.  I was not happy with this.

Then it occurred to me.  I should strain it through a cloth bag!  This is what I did when I made liquamen and it worked well to remove very fine particles.  Why did this take so long for me to consider?

Straining it through the bag worked really well.  The liquid was clear!

Unfiltered on the left.  Filtered on the right.

It took two days to let it all filter through.  Patience is a virtue here.  I felt confident that I was getting all the cordial through the bag.  In the end, I had just a little under 1/2 gallon of cordial.

The Verdict

The flavor was a lovely blend of lemon and brandy.  It did not strike my taste buds hard with lemon and it did not taste entirely of lemon.  It was definitely a blend.  The mouthfeel was good - enough of a syrupy texture to make me feel like I was sipping something substantial.  My guest taster and I both liked it very much and would love to have it either before or after a meal, or to go with some cheese and fruit as part of a dessert.

When I made curds and whey previously, I warmed up the milk before I added the acid for curdling.  Perhaps I should have done that here.

I should have filtered just the curds and whey through the bag before adding the sugar and brandy.  I think it would have gone faster as it wouldn't have been as thick. 

I did throw off the proportions a little by using the one extra cup of milk to rinse the lemons.  I think it curdled a little.  I doubt it affected the taste much.

I honestly don't know why the milk was important.  When I made lemon liqueur previously, I just soaked lemon peels in vodka for a few months, strained them out, and added sugar.  This worked just fine and the soaked peels were saved as zest for cooking.  

Of course this cordial took only a few days and it was ready for drinking right away.  I suspect it will improve with aging, which tends to smooth the flavors out.  I guess that the whey might add some thickness or improve the mouthfeel of the finished product.  This is all guesswork!

I call it a success.  I have enough to last a while so it will continue to age in the cupboard.  I need to add some lemon zest to it as per the recipe's recommendation.

Just so you know, "cordial" and "liqueur" are often used interchangeably.  They are both typically vodka or brandy infused with flavors, and sweetened.  Cordials are sometimes considered to be sweeter than a standard liqueur.  This was definitely sweet but not overwhelmingly so.