Because it relies on very fresh, high-quality beef, kilwa has traditionally been sold only on the days an ox or bull was just slaughtered in town, tying the dish to a specific market rhythm.
Kilwa is lean beef cut into strips and briefly dried or cured, then eaten raw or lightly seared, often dipped in mitmita chili powder or awaze paste. It's a favorite bar snack alongside tej in Tigrayan and Amhara highland towns.