Ingredients

Method

Place cucumber in a fine-mesh sieve set over a medium bowl; toss with 1 tsp. salt. Let sit 10 minutes, then squeeze well to remove as much moisture as possible (do not rinse).

Meanwhile, heat oil in a small saucepan over medium heat. Add mustard seeds and cook, stirring, just until they begin to pop, about 1 minute. Mix in ginger and turmeric and cook until fragrant, about 1 minute. Add vinegar and sugar and cook until syrupy, about 5 minutes longer. Mix in cucumber; transfer to a small bowl and season with salt. Let cool.

DO AHEAD: Relish can be made 1 week ahead. Cover and chill.