Sharp sharp knife.
Cut off stem end of tomato to it will stand upright
Carefully cur criss-cross eight cuts each on 45 degree angle 16 cuts total.
Lay tomato on side. Squeeze bulk of tomtato cut cross ways into cubes.
Cut off stem and tip of tomato to allow it to sit flat.
Use heavy sharp knife whack fifteen parallel cuts across onion
Turn onion sideways and do it again.
45 degrees and do it again
90 degrees and for the final time
Total 60 cuts
Lay on side like tomato and saw dozens of onion chips.
Redo when necessary the upright chops.
Put two heaping tablespoons in a pan and stir fry limp. Add to mix.
Chili serrano for authentic bite.
Yellow patches limones are ripe, all green are not.
Fresh cilantro. Whack it hard on a cutting board and release that flavor.
Want to-kill-for salsa?
Toast tomatoes over a flame until the skin blackens.
Pound into pulp with a molcajete. Stone mortar and pestle.
Yummy