The regional table / Washington
Seattle Teriyaki Chicken
The marinade and the sauce are the same mixture doing two different jobs, and the entire dish turns on keeping them in separate bowls.
Seattle teriyaki is a plate rather than a sauce. A boneless chicken thigh sits for hours in something sweet and salty, goes onto a hot grill until the sugar in it goes black at the edges, comes off, gets sliced across into strips, and is laid over short-grain rice next to a heap of finely shredded cabbage — the whole thing handed across a counter in a shallow tray for less than a sandwich costs. It is Japanese-American restaurant cooking, worked out in small owner-run storefronts in this one city, and it is not what the word means in Japan, where teriyaki names a glazing technique, most often applied to fish, in which a thin soy-and-mirin sauce is brushed on near the end of cooking. The federal serving-size table at 21 CFR 101.12 still files teriyaki sauce in the same row as catsup, steak sauce, soy sauce, vinegar and marinades, at a reference amount of one tablespoon. A Seattle counter puts something closer to a quarter cup on a single plate. The poultry labelling rule has noticed the sauce too, and its own worked example at 9 CFR 381.117(h)(1) is a processor declaring "containing 15% added solution of water and teriyaki sauce" on a label — which is a fair argument for marinating a plain thigh yourself.
The city those storefronts opened into had been emptied once, and any account of Japanese restaurants in Seattle that begins in the 1970s and never mentions 1942 is telling half of it. Lieutenant General John L. DeWitt's Final Report: Japanese Evacuation from the West Coast, 1942, printed by the Government Printing Office in 1943 and readable in full, counts 11,913 Japanese in King and Pierce Counties, which it glosses as Seattle and Tacoma, and then records the method in one flat administrative sentence: "Thus, the Japanese of Seattle were all sent to the Puyallup Assembly Center and later to the Minidoka Relocation Center." All of them. Forty-six years later Congress answered its own report. The Civil Liberties Act of 1988, Public Law 100-383, 102 Stat. 903, finds that the removals "were carried out without adequate security reasons and without any acts of espionage or sabotage documented by the Commission, and were motivated largely by racial prejudice, wartime hysteria, and a failure of political leadership", and two sentences later states that "the Congress apologizes on behalf of the Nation." What came back afterwards was not the same community in the same blocks. The spread of the teriyaki counter is easy to document and its origin is not. The City of Seattle publishes its Active Business License Tax Certificate file as open data, and it currently holds 57 live licences whose trading name contains the word teriyaki at addresses inside the city, under 48 distinct names — Nikko, Midori, Okinawa, Kyoto, Sunny, Yoshino, Teriyaki First, Teriyaki Seven, Seattle's Best Teriyaki — from Aurora Avenue North to California Avenue SW. The file cannot reach the beginning, though: the oldest teriyaki licence still live on it starts on 3 October 1994. One shop registers the claim of primacy with the city as its trading name, The Original Toshi's Teriyaki, on NE 45th Street since 2 March 1998, and a trading name is an assertion rather than a date. The two archives that would have tested it both refused — Washington Digital Newspapers answers scripts with a Cloudflare challenge, and the Secretary of State's corporate filing API replied to every request with "System verification in progress, please wait." So no founder and no founding year are named here. There is no printed ancestor for the recipe either, since the dish is younger than the public domain by half a century, and the quantities below were worked out for this page.
Why this version works
Two bowls, one mixture. Pour off the glaze portion before any raw chicken touches the liquid. What marinates is discarded; what was reserved gets boiled down and goes on the cooked meat. This is the food-safety rule and the flavour rule at once — the reduction is concentrated and glossy in a way that raw marinade brushed on at the grill never becomes.
The cabbage is the acid. Sweet sauce, salty sauce and white rice have nothing in them that cuts. The vinegared cabbage is not a garnish on this plate, it is the third leg, and a plate served without it tastes flat by the fourth bite.
Thigh, and nothing else. A sugary marinade over direct heat wants meat that can sit there while the outside blackens. Thigh has the fat and the connective tissue to do it and still be juicy two minutes past the point where a breast has gone chalky. It is also what the counters use, because it survives being held on a flat-top through a lunch rush.
The char is sugar, not smoke. Half a cup of brown sugar plus the sugar in the mirin means the surface caramelises and then burns long before the inside is done, and the black flecks are the point. Keep the heat high and the pieces moving, and take the meat off when it reads 175°F rather than when it looks right.