How to Make Green Beer

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How much fun is it to drink green beer on St. Patrick’s Day? After all, St. Patrick’s is the one holiday of the year where everyone is Irish and green beer is such a fun novelty for all revelers (over 21, of course) on this special day!

Two mugs of beer cheersing

This recipe is super easy to make and goes perfectly with, you guessed it, corned beef and cabbage or Irish Stew! Paired with a mug of green beer everyone will be raising a glass and saying ‘Cheers!’ in no time!

What is Green Beer?

Undoubtedly, green beer is an American invention, certainly not Irish. A physician first colored beer green for his party back in 1914 and the trend really took off!

Nearly everything can be turned green on St. Patrick’s Day, why not beer?

Food colouring being poured into two mugs

How to Make Green Beer

Green beer looks brightest when a pilsner, lager, or pale ale is used.

  1. Pour half the beer into the beer glass.
  2. Add 2 to 4 drops of green food coloring to the glass.
  3. Stir and fill the glass to the top with the remainder of the beer.

Even the foam will turn bright green!

If your glass is chilled/frozen and you add the food coloring first, it can freeze to the bottom which is why I add half of the beer frist. Another option is to add a few drops of food coloring right to the can/bottle of beer before pouring it.

How to Make It Without Food Coloring

For a non-food coloring method (one that won’t stain your teeth or your clothes), here are three alternatives to turn beer green!

  • Stir about 1 tablespoon of wheatgrass juice into a glass of beer.
  • Put 1/2 teaspoon of spirulina in a small bowl, whisk in a little beer and then pour into a beer glass and add the rest of the beer.

These options will result in a change in the flavor of the beer but will result in a fun green color!

St. Patricks Day Favorites

Mugs with green beer on a marble board with a can of beer being poured in
5 from 2 votes
Review Recipe

Green Beer

Cook Time 5 minutes
Total Time 5 minutes
Servings 1 beverage
Author Holly Nilsson
Green Beer is mandatory for St. Patricks Day! This recipe is festive & simple!


  • 12 ounces light beer
  • 2-3 drops green food coloring additional if required

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  • Chill glasses in the freezer for 15-20 minutes if time allows.
  • Fill the glass half full of beer and add 2 drops of food coloring.
  • Pour the remaining beer over top.
  • Very gently stir to combine and enjoy!

Recipe Notes

Start with 2 drops of food coloring and add additional if required to darken the color. 

Nutrition Information

Calories: 99, Carbohydrates: 6g, Protein: 1g, Sodium: 14mg, Potassium: 71mg, Sugar: 1g, Calcium: 14mg

(Nutrition information provided is an estimate and will vary based on cooking methods and brands of ingredients used.)

Keyword green beer
Course Beverage, Drink
Cuisine American, Irish
Green beer in mugs with a title
Mug of green beer with a can of regular beer being poured in with a title
Green beer in a mug with writing
About the author


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Holly is a wine and cheese lover, recipe creator, shopping enthusiast and self appointed foodie. Her greatest passion is creating in the kitchen and making deliciously comforting recipes for the everyday home cook!

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