Heat tortillas: wrap 3-6 tortillas in foil and place in oven preheated to 250 degrees.
Prepare mushrooms: slice mushrooms and shallot thinly, and add to pan on low-medium heat with 1 Tbsp of cooking oil and a pinch of salt. When mushrooms release juices (3-5 mins), add soy sauce and minced garlic. Let cook for 2-3 mins, then remove from heat.
Prepare Lime Crema: add all ingredients into a small mixing bowl, and whisk until homogenous.
Optional: Prepare salsa - I like to strain my salsa so I don't have big puddles of juice dripping onto my plate. Take a half cup of your salsa, and strain for a couple mins so the juice drips off.
Assemble tacos: warm tortilla, small spoonful of mushrooms (make sure to drain off any juice), salsa, lime crema, potato sticks, and cilantro. Enjoy!