1. In a small saucepan, combine the chopped rhubarb, soy sauce, honey, grated ginger, minced garlic, and water. Stir everything together so the honey starts dissolving.
2. Cook over low heat for 10-15 minutes, stirring occasionally. You want the rhubarb to completely break down and turn soft and mushy. Don’t rush this on high heat or you’ll burn the soy sauce.
3. Remove from heat and let the mixture cool to room temperature. This takes about 30 minutes. Don’t try to strain it hot or you’ll burn yourself.
4. Once cooled, set a fine mesh sieve over a bowl and pour your rhubarb mixture through it. Use a spoon or spatula to press on the solids and squeeze out all the liquid. Really get in there and extract every drop. Discard the solids.
5. To make each cocktail: Fill a glass with ice cubes all the way to the top.
6. Pour 2-3 tablespoons of the rhubarb teriyaki syrup over the ice. Start with 2 tablespoons and add more if you want stronger flavor.
7. Top off the glass with sparkling water, leaving a bit of room at the top. Give it a gentle stir to combine—don’t stir too hard or you’ll lose the bubbles.
8. Tear a few fresh mint leaves slightly to release their oils, then drop them on top as garnish. Serve immediately while it’s cold and fizzy.

Nutrition Information (Per Serving, with 2.5 tbsp syrup):

• Calories: 45
• Carbohydrates: 10g
• Protein: 1g
• Fat: 0g
• Fiber: 0g
• Sodium: 480mg
• Sugar: 8g
• Vitamin K: 8% DV

Rhubarb provides vitamin K and antioxidants, while ginger offers anti-inflammatory benefits.

Notes:

• Use only rhubarb stalks, never the leaves—they’re toxic.
• Fresh ginger and garlic make a huge difference over jarred varieties.
• Start with less syrup per drink and add more rather than making it too strong.
• The syrup should be smooth with no chunks—press hard on the solids when straining.
• Low-sodium soy sauce gives you better control over saltiness.

Storage Tips:

Store the strained rhubarb teriyaki syrup in an airtight jar or container in the fridge for up to 2 weeks. The flavors actually improve after a day or two. Shake well before using as ingredients may settle. Don’t freeze the syrup—the texture gets weird when thawed. Make cocktails fresh when ready to serve for best fizz.

Serving Suggestions:

• Party Pitcher: Scale up the recipe and serve in a pitcher with sparkling water on the side so guests can mix their own
• With Asian Food: Perfect alongside sushi, stir-fry, or grilled teriyaki dishes
• Brunch Beverage: Serve at spring brunch as a sophisticated non-alcoholic option
• Adult Version: Add vodka or gin for those who want an alcoholic cocktail

Mix It Up (Recipe Variations):

Spicy Rhubarb Cocktail: Add 1-2 thin slices of jalapeño to the syrup while cooking for heat that creates an addictive sweet-spicy-savory combination.

Ginger-Forward Version: Double the fresh ginger to 1 tsp for pronounced spicy warmth that really dominates the flavor profile.

Adult Rhubarb Cocktail: Add 1.5 oz vodka or gin before adding sparkling water for an alcoholic version with complex savory notes.

Cucumber Rhubarb Cooler: Muddle 3-4 cucumber slices in the glass before adding syrup for an even more refreshing spa-like drink.

What Makes This Recipe Special:

This rhubarb teriyaki cocktail boldly combines spring’s signature tart vegetable with Asian-inspired savory ingredients, creating a mocktail that’s genuinely interesting rather than just sweet fruit juice. The umami from soy sauce adds complexity that makes non-drinkers feel they’re having something special and sophisticated. Finding the right balance where rhubarb, sweetness, soy, and ginger all play together creates a drink that’s conversation-starting and memorable.