In a saucepan, combine vinegar, water, sugar, salt, peppercorns, mustard seeds, bay leaves, dill, and garlic.
4 Bring to a boil, simmer 2–3 minutes.
Pickle:
5 Pour hot brine over mushrooms in jar, making sure they’re submerged.
6 Seal and let cool, then refrigerate.
7 Best after 24 hours; keeps 2–3 weeks in fridge.
8 💡 Serve with cured meats, sausages, or as a tangy counterpoint on a harvest platter.