A refreshing topping for carbohydrate and meat-style foods. The South American equivalent of salsa.

Cleave

from top to bottom, along the grain, then slice it fine across the grain, forming half-rings. Rinse in cold water, soak in cold water for >5 minutes, and rinse again. This procedure washes away the contents of the plant cells destroyed by the knife, taking the sting out of the onion's flavor.

Squeeze over it the juice of

That's it. All remaining ingredients are optional.

Toss in:

Serve on top of: