THE people behind the interiors of Spices, JW Marriott’s Pan-Asian restaurant, deserve a good, back-bending bow. Make that three. With its dark wood finish and period Oriental motifs, you half expect a reverberating gong and a fat, smiling Chinese with a Ming moustache and braided hair to usher you inside.But it’s just three in the afternoon. The tables are empty, the bar is closed and the air sags with the ennui that comes from waiting for the evening. Chef Kazuhiro Koizumi is already at work and smiles benignly as his pupil for a day walks into the kitchen, looking the part. Koizumi, who hails from Niigata (a three-hour ‘‘Shinkansen whoosh’’ from Tokyo), is cleaning the sticky rice and, after failing to breach the language barrier, points towards a mountain of lettuce. Thankfully, his juniors, Sanjay and Atul, are there to fill in Koizumi’s ponderous blanks. The flora, which I wash and clean thoroughly, is for a teppenyaki salad. ‘‘The rice must never be cold or hot, just a little warm,’’ says Sanjay, as Koizumi, who is packing the rice into a pressure cooker, nods for extra emphasis. The chef, who’s been making sushi for the last 20-odd years, says that warm rice is perfect for malleability. The other things on top of the checklist? Hygiene and freshness. Every sushi chef dips his hand in vinegar water before handling the fish, which aids both in keeping the food cool and thwarts germs on the hands from contaminating the fresh fish. And they are quick when it comes to dealing with seafood, most never talk while preparing sushi. Koizumi, who’s by now moved on to breaking some eggs and lacing them with soy sauce and sugar, beckons me over. We’re going to make the egg roll.