Mushroom Risotto

Usually two things. The rice was not toasted dry before adding liquid — the tostatura step makes the grain hold its structure during cooking, without it you get porridge. The stock was added in too large amounts or all at once — risotto needs gradual addition so the rice absorbs liquid and releases starch at the right pace. Also: the heat was too high. Risotto should simmer gently, not boil hard. Gluey instead of creamy usually means either overcooked rice or stock added too quickly.

Constant stirring is an oversimplification. The truth is you need to stir frequently, not every single second. After each addition of stock, stir actively until the liquid is almost absorbed. Then you can rest for a minute. The stirring matters because grain movement causes the grains to rub against each other and release starch — that starch creates the creaminess. No stirring at all and the rice burns on the bottom. Aggressive non-stop stirring and the starch exhausts itself too fast and the result is gummy.

Arborio and Carnaroli are both correct. Carnaroli holds its shape better and forgives more mistakes; Arborio is more widely available. Both work. Regular long-grain rice will not work: it has too little surface starch to create the creaminess. Sushi rice could theoretically work but the texture will be different. Short-grain rice with high starch content is the only real substitute. If you can find Arborio, use Arborio.

Mantecatura is the final step: cold butter and parmesan stirred in vigorously after the pan is removed from heat. This is the most skipped step in home cooking and also the most important. The goal: butter and cheese form an emulsion with the starchy cooking liquid — a smooth, unified creamy mass. If you add butter to a hot boiling pan it simply melts and separates, no emulsion forms. The butter must be cold (straight from the fridge), the pan off heat, and both stirred in hard for a few seconds. This is what gives risotto its fluid, glossy texture — what Italians call all'onda, the wave.

Both work and combining them is the best option. Fresh mushrooms (cremini, button, chanterelle) give a more delicate flavour and beautiful texture. Dried porcini give very intense earthy aroma — a small amount changes the flavour of the whole dish. Use fresh cremini as the main mushroom and a handful of soaked dried porcini for depth. Do not throw away the porcini soaking water — strain it and add it to the stock. It is so aromatic it can raise the dish to another level entirely.