Even before SFoodie learned of the existence of Toast Deli's Sisig Surprise sandwich from @joanneisafoodie, we could have predicted it it was out there, waiting for us to learn of its existence.
Sisig, a drinking snack created in the 1970s, has become a generational touchstone, the dish that seems to define modern Filipino food in the Bay Area. SFoodie has seen fish, chicken, pork, tofu, and chickboy (chicken-pork) sisig on local menus, not to mention sisig nachos and pizza. We have bought more sisig tacos from food trucks than we can count. If Proctor & Gamble introduced sisig-flavored Pringles, we'd probably buy them, too.
The bun could barely contain Toast's entropic sandwich. Chopped pork spilled out of its sides, and the moment we picked up one half, the yolk in the puffy fried egg burst, saturating the meat and gilding our fingers. The chopped pork was doused in Arcilla's "hitter" sauce, with enough soy sauce and lime to make the meat pulse with umami, standing up to the bite of raw onion and sting of jalapeños.
