1 serving
Boston Sour ingredients
These original amounts make 1 serving. Compare cl, US fluid ounces and parts to use the measure you have at home.
| Ingredient | Amount | cl | oz | parts |
|---|---|---|---|---|
 Bourbon | 60 ml | 6 cl | 2 oz | 4 parts |
 Lemon Juice | 22.5 ml | 2.3 cl | 0.8 oz | 1.5 parts |
 Rich Simple Syrup | 15 ml | 1.5 cl | 0.5 oz | 1 part |
 Egg White | 15 ml | 1.5 cl | 0.5 oz | 1 part |
Garnish: Expressed lemon zest
Method
How to make Boston Sour
Follow the 6 reviewed catalog steps in order.
- 01
Chill the coupe thoroughly and prepare the Expressed lemon zest before mixing.
- 02
Measure bourbon, lemon juice, rich simple syrup, egg white accurately and add them to a clean cocktail shaker.
- 03
Fill the shaker about three-quarters full with solid ice cubes and seal it firmly.
- 04
Shake with ice, strain back into the shaker, dry-shake without ice to refine the foam, then fine-strain into the chilled coupe.
- 05
Fine-strain into the chilled coupe so no small ice fragments reach the drink.
- 06
Finish with Expressed lemon zest and serve immediately while very cold.
Tasting profile
What does Boston Sour taste like?
The strongest signals in Kokto’s five-axis profile are sourness (4/5) and strength (4/5).
Kokto editorial profile for this exact house build. Scores are directional, not laboratory measurements or universal values.
Quick answers
Boston Sour questions
What is in a Boston Sour?
Kokto’s build uses bourbon, lemon juice, rich simple syrup, and egg white.
How long does a Boston Sour take to make?
The governed recipe allows about 5 minutes for one serving. Equipment, ice and ingredient preparation can change the real time.
How is a Boston Sour prepared?
It uses a shaken method and is served in a coupe. Follow the reviewed steps above instead of relying on the method label alone.
Is a Boston Sour alcohol-free?
No. This Kokto recipe contains alcoholic ingredients and is intended only for adults of legal drinking age.
Continue exploring
Related cocktail recipes
These reviewed recipes are the closest matches in Kokto’s current catalog set, ranked by shared core ingredients.
Evidence
Sources & editorial note
The ingredients and steps above are Kokto's recipe specification. An external classic reference may use different amounts or techniques; follow one complete specification when mixing.
- Cocktail App English editorial catalog B003https://www.diffordsguide.com/cocktails/recipe/4387/boston-sour · amounts, steps, timing and entity relationships
- Kokto governed media recordCocktail App project owner · Project-owned generated original — all rights reserved