Prepare the bacon by making a slit in the center, rolling it, and carefully cutting around the edges. Unroll and cut into cubes. Squeeze lemon juice over it to prevent oxidation and add flavor.
2
Open the canned tuna and squeeze out as much liquid as possible to prevent the bread from absorbing excess moisture.
3
Make the pizza sauce: Add white wine (or sake) to a pan, then oyster sauce for depth. Add ketchup and cook to develop flavor. Finally, add Tabasco sauce and honey, stir briefly, and remove from heat.
4
Spread a thin layer of butter on the bread first to prevent the pizza sauce from making it soggy and to maintain crispness during toasting.
5
Spread the pizza sauce over the butter and arrange the bacon, tuna, avocado, and onion on top.
6
Top with mozzarella cheese and mayonnaise if desired.
7
Toast in the oven at high temperature until the top is golden brown.