Makes 1 tray
The combination of green ingredients that’s then strained to freeze into these cubes changes the nature of the drink as you sip. Instead of diluting, the flavor of the drink keeps changing and sometimes intensifying.
2 jalapeño or serrano chiles, seeds and ribs removed
1 large cucumber, halved and cut into ½-inch slices
3 small tomatillos, husked, rinsed, cored, and diced
1 garlic clove
2 tablespoons chopped fresh parsley
2 teaspoons anchovy paste
Combine the chiles, cucumber, tomatillos, garlic, parsley, and anchovy paste in a blender or food processor and purée until smooth. Force the mixture through a strainer, pressing with the back of a spoon to extract as much liquid as possible. Freeze the mixture in an ice cube tray until solid, then transfer the cubes to a heavy, resealable plastic bag.
Note: The cubes can be frozen for up to 6 months.