Tacos, burritos and chili are easy to make in Japan once you know where the tortillas and beans are. Fresh chilies and Mexican cheese are the only real gaps.
KALDI and Costco are the easiest places for tortillas, salsa and canned beans. Large supermarkets have avocados, limes, cumin and sour cream. Online shops sell corn tortillas, masa harina and chipotle.
Flour tortillas
KALDI, Costco, some large supermarkets (トルティーヤ)
Corn tortillas
Mostly online
If not: Flour tortillas warmed in a dry pan
Black beans
Canned at KALDI, Costco, online
If not: Canned red kidney beans (レッドキドニー)
Jalapeños
Pickled jars at KALDI; fresh ones are rare
If not: Shishito peppers (ししとう) with a pinch of chili flakes
Cilantro (パクチー)
Herb section at most supermarkets
Queso fresco
Rarely sold
If not: Crumbled feta, or cottage cheese (カッテージチーズ)
Chipotle
Online
If not: Smoked paprika (スモークパプリカ) with chili powder
Limes (ライム)
Large supermarkets, more often in summer
If not: Lemon
Sour cream (サワークリーム)
Dairy section
If not: Thick plain yogurt
Cumin and dried oregano
Spice aisle (クミン, オレガノ)
Lazy Recipe sees that you're in Japan, picks swaps from Japanese supermarkets, and your shopping list shows each item's Japanese label and aisle. Type a dish or snap a photo.