This Jarnac sour cocktail recipe is delicious and easy to make. It is creamy, foamy and a classic.

The pretty foamy amber cocktail in a coupe glass

This cocktail is a classic that hardly anyone has heard of. Including me.

I found it when I was surfing the web for inspiration. I loved the way it looked so I knew I had to make it.

I also loved that it has an egg white in it. That’s what makes it so foamy!

Now, of course it is a raw egg white. Here is an article that explains the dangers of eating them. But since the odds of my getting salmonella are slim, I took the chance.

This post may contain affiliate links, which means I get a small commission, at no additional cost to you, if you click the link and buy something. You can read my disclosure here.

Helpful tips

Make your own simple syrup as it is so easy. Here’s how: Add 1 cup of water and 1 cup of sugar to a small to medium saucepan. Heat on medium and stir as the sugar melts. Lower to a simmer and cook for 5 minutes. Let cool totally before adding to a cocktail.
You will need to separate the yolk from the whites. Here’s an easy way that my grandmother used to do. Crack an egg and put it in one of your hands. With your hand over a measuring glass, let the egg white run through your slightly separated fingers and into the glass. You can transfer the yolk between both of your hands until all the white has dropped into the glass. Either toss the yolk or save it and use it in an omelette. 🙂

How to make a jarnac sour cocktail

Pre-step

Get a cocktail shaker and DO NOT fill it with ice. This cocktail is a dry shake which means no ice at the beginning. The reason is because it will the egg white foam up and thicken.

Also get a measuring glass and coupe glass.

After measuring out the ingredients, add to the shaker.

Step one

Gather the ingredients – cognac, dry vermouth, simple syrup, lemon and egg.

Egg, cognac, dry vermouth, simple syrup, glass and shaker on a grey table

Step two

Measure out 2 ounces of cognac.

Cognac measured out with the cocktail shaker and bottle in the background

Step three

Measure out 1/2 ounce of dry vermouth.

Dry vermouth measured out with the bottle and cocktail shaker in the background

Step four

Measure out 1/2 ounce of simple syrup.

Simple syrup measured out with the bottle, shaker and glass in the background

Step five

Measure out 1/2 ounce of lemon juice.

Lemon juice measured out with the fruit, glass and cocktail shaker in the background

Step six

Separate the egg white from the yolk. See my helpful tips or notes in the recipe card to see an easy way to do it.

Egg white in a measuring glass with a cocktail shaker and glass in the background

Step seven

Cap the shaker and shake it vigorously.

The cocktail shaken and the coupe glass off to the right

Step eight

Add 3 – 4 cubes of ice to the shaker and cap it again and shake it a good 10 more times.

Strain the contents into the coupe glass.

The amber cocktail with a foam head in vertical view

Isn’t it a pretty cocktail? I think so.

Overhead view of a foamy cocktail on a grey table

You could almost think you were looking on the surface of the moon!

I hope you enjoyed this Jarnac sour cocktail recipe. I did enjoy drinking it.

Other recipes that use cognac

And as always, may all your dishes/drinks be delish!

If you’ve tried this recipe, I’d love to know your thoughts in the comments below. I love hearing from you! You can also FOLLOW ME on FACEBOOK, TWITTER, INSTAGRAM, and PINTEREST to see more of my delicious food and delightful cocktails!

The pretty foamy amber cocktail in a coupe glass - square

Jarnac Sour Cocktail

Although this delicious Jarnac Sour cocktail is not mainstream, it’s so tasty and fun to drink!

5 from 1 vote

Print Pin Rate

Course: Cocktail

Cuisine: Cocktails

Keyword: jarnac sour, jarnac sour cocktail

Prep Time: 5

Total Time: 5

Servings: 1 cocktail

Calories: 199kcal

Author: Elaine Benoit

Ingredients

2 ounces cognac
1/2 ounce dry vermouth
1/2 ounce simple syrup
1/2 ounce lemon juice freshly squeezed
1 egg white

Instructions

In an empty shaker (no ice), add cognac, dry vermouth, simple syrup, lemon juice and egg white
2 ounces cognac, 1/2 ounce dry vermouth, 1/2 ounce simple syrup, 1/2 ounce lemon juice, 1 egg white
Cover shaker and shake vigorously at least 10 times
Mixture should get cloudy and foamy
Get your coupe glass
Add 4 – 6 ice cubes and shake another 10 times
Strain into coupe glass
Lift glass to lips
Sip
Smile
Enjoy

Equipment

cocktail shaker

measuring glass

Coupe glass

See all my favorite tools and gift ideas at my Amazon Store page!Check out Elaine’s Amazon Store!

Notes

Helpful tips

Make your own simple syrup as it is so easy. Here’s how: Add 1 cup of water and 1 cup of sugar to a small to medium saucepan. Heat on medium and stir as the sugar melts. Lower to a simmer and cook for 5 minutes. Let cool totally before adding to a cocktail.
You will need to separate the yolk from the whites. Here’s an easy way that my grandmother used to do. Crack an egg and put it in one of your hands. With your hand over a measuring glass, let the egg white run through your slightly separated fingers and into the glass. You can transfer the yolk between both of your hands until all the white has dropped into the glass. Either toss the yolk or save it and use it in an omelette. 🙂

Nutrition

Get new recipes in your inbox!Click here! to sign up for our newsletter

Elaine Benoit

Website | + posts

From lighting up stages with her BA in theater to food journalist, Elaine Benoit's journey is a testament to passion's transformative power. As the CEO of Dishes Delish, she offers a blend of healthy, comforting recipes and exquisitely crafted cocktails. Beyond the kitchen, Elaine voiced her culinary adventures on her podcast, "Dishing," and co-owns Food Blogger Help, extending her expertise to guide budding food bloggers to success. Whether it's for a heartwarming dish or insights into food blogging, Elaine's diverse experiences make her a beacon in the culinary digital landscape.