Nameko and Tofu Misoshiru (なめこと豆腐の味噌汁, miso soup with nameko mushrooms and tofu)

Nameko looks like the mushroom someone forgot to make respectable, amber caps wrapped in a slick coat. Leave that coat alone. It is the reason we use nameko in misoshiru: it turns the broth silken without any thickener, and it tastes most itself when autumn has cooled the mornings.

That slipperiness makes some cooks hesitate. Good. It means they're paying attention. Rinse the mushrooms only if they are gritty, then briefly; scrub them and you've washed away the very texture you bought them for. Sourcing first, always: the caps should be small, glossy, and fresh-smelling, with no sour edge.

The rest is simple order. Make clean dashi, warm the nameko and tofu, then dissolve the miso off the heat. Miso is never boiled because strong heat drives off its fragrance and leaves the broth flat, a little rough at the edges. Add it last and this bowl stays calm: mushroom, soybean, stock, season, nothing hidden.