Spam Musubi

Spam entered Hawaiian foodways during World War II, when the shelf-stable canned meat was shipped to the Pacific in bulk to feed troops; with fresh meat scarce, locals embraced it, and the taste never faded — Hawaiʻi still leads the U.S. in per-capita Spam consumption, around 7 million cans a year, roughly six per resident. Separately, Japanese laborers recruited from the late 1800s to Hawaiʻi's sugarcane and pineapple plantations brought onigiri (musubi) with them as a plantation-lunch staple; tucking Spam into the rice ball produced the early musubi. The rectangular form is generally credited to Japanese-American Barbara Funamura, who introduced it around 1982–83 at her shop Joni-Hana in the Kukui Grove Center on Kauaʻi — first shaped as a triangle, later pressed into a block with a mold — and it spread statewide within a year. (Exact dating varies across accounts; an earlier claim attributing it to Mitsuko Kaneshiro at a Joni's Drive-In on Oʻahu appears to be mistaken.)

Invented 1983 at Joni's Drive-In on Oahu by Mitsuko Kaneshiro. Spam stuck around because the U.S. military shipped 150 million cans to Hawaiʻi during WWII; nori must wrap right before eating or it goes soft from rice steam.

A finger-thick block: a slab of pan-fried Spam glazed with shoyu and sugar, pressed onto a brick of short-grain rice, banded with a strip of nori. Eaten cold or room-temp, by hand, often from a plastic-wrapped pile at a Hawaiian convenience store. The Spam has crisp edges; the rice is firm enough to hold without falling apart.

The Spam is sliced about a centimeter thick and pan-fried until both faces caramelize from the sugar in the meat — too thin and it dries; too thick and the center stays cold against the rice. The shoyu-sugar glaze is brushed on at the end, not at the start, so the sugar doesn't burn. Nori must be wrapped right before eating or it goes soft from the rice steam.