Most Thai home dishes only need a handful of ingredients that are easy to find in Japan. The fresh herbs are the hard part, and each one has a swap that keeps the dish tasting right.
Large supermarkets have an ethnic food shelf (ใจในใใใฏ) with fish sauce, coconut milk and curry paste. KALDI Coffee Farm, Gyomu Super (ๆฅญๅในใผใใผ) and Seijo Ishii carry more, and Amazon or Rakuten have everything else.
Fish sauce (ใใณใใฉใผ)
Ethnic shelf at most large supermarkets, KALDI, Gyomu Super
Coconut milk (ใณใณใใใใใซใฏ)
Canned, on the ethnic shelf; cheapest at Gyomu Super
Thai curry paste
KALDI and most large supermarkets (green, red and yellow)
Thai basil (ใใผใชใผใใธใซ)
Rarely sold fresh
If not: Regular basil with a few shiso leaves (ๅคง่)
Lemongrass (ใฌใขใณใฐใฉใน)
Dried or frozen at KALDI; fresh in summer at some shops
If not: Lemon zest
Makrut lime leaves
Dried at KALDI or online
If not: Lime or lemon zest
Galangal
Hard to find
If not: Fresh ginger (็ๅง)
Palm sugar
KALDI or online
If not: Light brown sugar (ใใณ็ ็ณ or ไธๆธฉ็ณ)
Bird's eye chili
Fresh ones are rare
If not: Dried red chili (้ทนใฎ็ช)
Jasmine rice
KALDI, Gyomu Super, online
If not: Japanese rice with slightly less water
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.