Marukame Udon Waikiki in Honolulu pours kake udon for around $6 a bowl from a cafeteria-line counter, with tempura sides at a buck each making a full meal.
Try: Kake udon
Tip: Daily 10:00-22:00. Average bowl plus tempura runs about $9 to $12. Cash and card.
Ono Seafood in Kapahulu Honolulu fills a two-scoop poke bowl with shoyu ahi and rice for around $12, the most affordable sashimi-grade poke in the city.
Try: Two-scoop poke bowl
Tip: Closed Sunday and Monday. Eat at Ala Wai Park; sells out by 16:00 weekends.
Leonard's Bakery in Kapahulu Honolulu sells the canonical Hawaii malasada for around $2 each at the counter, the lowest-cost taste of Portuguese-Hawaii sweet.
Try: Original sugar malasada
Tip: Daily 05:30-19:00. Order half a dozen sugar plus a custard; box stays warm for 30 minutes.
Zippy's Kapahulu in Honolulu serves the local-chain chili over rice for around $9, plus saimin bowls at $9 to $11, with the 24-hour diner the cheapest.
Try: Zippy's chili and rice
Tip: Open 24 hours. Chili sold over rice, in bowls or in the Zip Pac bento. Drive through if dine-in is slammed.
Musubi Cafe Iyasume on Kuhio in Waikiki Honolulu sells handmade Koshihikari rice spam musubi for $3 to $5 a piece, the most efficient breakfast under five.
Try: Spam musubi
Tip: Daily 06:30-21:00. Pair a teriyaki spam musubi with a bottled matcha for a $7 breakfast.