Ingredients

5 ounces feta, crumbled 

1 red chile (seeded, if less heat is desired), thinly sliced crosswise (1 tablespoon) 

2 small stalks celery, thinly sliced crosswise (3/4 cup), plus 1/4 cup celery leaves 

3 to 4 tablespoons red-wine vinegar 

Kosher salt 

1/2 cup extra-virgin olive oil 

Preparation

Combine feta, chile, celery and leaves, and vinegar in a bowl. Season with salt. Spoon into an airtight container; top with oil. Mixture can be refrigerated up to 1 week; return to room temperature before using.