Where do I find Turkish, Indian, Middle Eastern or Latin ingredients that supermarkets don't stock?
Cooking the food of home is one of the first routines that stops working after a move, because the mainstream chains carry a narrow range of spices, pulses, cuts of meat and fresh herbs. Diaspora communities here solved this decades ago through a parallel set of shops that newcomers rarely turn up by searching in English.
Dutch cities have a whole parallel grocery ecosystem that mainstream supermarkets don't really compete with. Look for a toko — originally the term for an Indonesian/Asian grocery from the colonial-era vocabulary, now used loosely for any Asian specialty shop — for rice varieties, tofu, fish sauce, and fresh herbs you won't find at AH. Turkish and Moroccan supermarkets are common in most cities with any sizeable immigrant population (Rotterdam, The Hague, and Amsterdam West all have clusters), and they're usually where you'll get proper flatbreads, halal meat, bulk spices, olives, and fresh produce at prices noticeably below the big chains. Larger Asian supermarket chains like the Amazing Oriental group cover a wider Southeast and East Asian range under one roof if you need Latin, Indian, and Chinese ingredients in the same trip. Weekly outdoor markets are worth checking too — Amsterdam's Albert Cuypmarkt and similar markets in other cities often have stalls dedicated to exactly this kind of produce and spice range, frequently cheaper and fresher than anything shelf-stable in a supermarket aisle. Google Maps searches for "toko" or "Turkse supermarkt" near you turn up more than you'd expect.