Udon Sanku is an udon specialty shop near Fukushima Station in Osaka that serves thick handmade udon with katsudon sets. The udon comes in cold or warm options, and the noodles have a firm, chewy texture. The shop opens at 10 a.m., and customers buy a meal ticket from a vending machine and pick up their order themselves when their number is called. It accepts cash only and does not take card payments.