Pickled White Shimeji Mushrooms 2-Pack

Twenty-one days is the shortest ferment we run, and it is short deliberately. White shimeji grow in tight clusters on slender stems, with small caps and not much substance for a brine to work through. Every duration in our range was arrived at by tasting rather than by a formula, and this one stops where it does because the snap is the point — push it further and you lose the thing worth eating.

Fermenting is only the first stage. The sealed jar then rests for roughly a month before it leaves us. The ferment builds the acidity; the rest lets it settle into the mushroom, so the first bite and the last taste like the same jar.

Filtered water, white wine vinegar, garlic, dill, mustard seed, sea salt and black peppercorns. Only garlic and salt appear in all five of our jars — everything else is chosen for the mushroom in front of it.

White wine vinegar is the mildest we use, and it is here because a shimeji is easy to bury. Anything darker would simply take the jar over. Dill does the job it does in a cucumber pickle: it reads as bright before you have worked out why. The mustard seed gives you something to find — a small pop against a mushroom that is otherwise all texture. No sugar, no oil, nothing to thicken the brine.

This is the lightest jar we make. Black shimeji is its closest relative and goes further in every direction — apple cider vinegar and toasted coriander in place of white wine and dill, three more days of ferment, a rounder and darker result. Crimini shares the same 21 days and the same white wine vinegar, but a crimini is a denser, more familiar mushroom and eats like one.

Shiitake and king oyster are the heavy end: 28 and 32 days, tamari and truffle oil respectively, both far more assertive than this. Choose white shimeji when you want the jar that disappears into a dish rather than announcing itself.

Ready to eat, and better for no cooking at all. Lift them out with a fork and let them drain for a moment; they will sit on a plate without weeping brine across everything else.

On a board they hold up beside burrata or fresh mozzarella, where the acid does what a pickle is for — cutting something soft and rich. In a rice bowl or a cold noodle salad they can be the sharp element instead of a dressing. Through hot pasta, add them off the heat at the last moment: three weeks of work goes soft in a hot pan faster than you would expect.

Keep the brine. It is a finished vinaigrette already.

Every jar is 480g net, 250g drained, and keeps sealed in a cupboard for twelve months. Once it is open it lives in the fridge and is best inside four weeks — though the brine keeps working the whole time, so the last forkful is a little sharper than the first. That is fermentation doing what it does, not the jar going over.