Place the slices of tuna on a plate. Garnish with the red onions. Squeeze lime juice all over and top with the avocado and jalapeno. Drizzle with the soy sauce. Serve immediately with crackers.
Warning: Consumption of raw or undercooked shellfish may substantially increase the risk of foodborne illness.
Consumption of raw or undercooked eggs, shellfish and meat may increase the risk of foodborne illness.
Recipe courtesy of Chuck's Week Off: Mexico