This is a go-to appetizer over fried wontons any time my family gets together, and here as an amazing salad. Everyone goes straight to them and they disappear quickly, so make sure you get a bite for yourself! Recipe adapted from Alfred Portale's Gotham Bar and Grill Cookbook.
Vinaigrette: Put the lime juice, ginger juice, and hot sauce in a food processor or blender. With the motor running, slowly add the oil. Whisk in the shallot and garlic. Season with salt and pepper.
Tuna: Do this just before serving or the vinaigrette will cook the tuna. Mix the tuna, scallions, vinaigrette, and season with salt and white pepper to taste.
Add the tuna to a bowl with the lettuce and serve immediately!