Prep Time 10 minutes mins
Chill Time 30 minutes mins
Total Time 40 minutes mins
Swaps: Use Greek yogurt in place of kefir for a thicker soup, or add a splash of white wine vinegar for brightness. Dairy-free: use a plant-based kefir or yogurt. Storage: keeps 2-3 days refrigerated and can be made up to a day ahead; a squeeze of lemon on top keeps the color bright. Freezing is not recommended - the texture suffers.