Dissolve the salt completely in water by stirring well—this creates your brine base. While the brine cools slightly, prepare all your ingredients: wash and slice the radishes into even 1/4-inch rounds (uniform thickness ensures even fermentation throughout the batch), thinly slice the garlic, and measure out your peppercorns and red pepper flakes. Having everything prepped and ready before you start packing jars keeps the process smooth and ensures your radishes spend minimal time exposed to air.

Divide the peppercorns, red pepper flakes, sliced garlic, and dill sprigs between your clean jars, distributing them evenly as your aromatic base. This layering technique ensures every bite of radish will have contact with the flavorful spices. Pack the radish slices tightly into each jar on top of the aromatics, leaving about 1 inch of headspace at the top—this space is crucial for the fermentation process to work properly and prevents overflow as gases are released.

Pour the brine from Step 1 over the packed radishes until they're completely covered, maintaining that 1-inch headspace at the top. I find it helps to pour slowly and carefully to avoid displacing the spices. Place a fermentation weight (or a small jar filled with water) on top to keep all the radishes submerged beneath the liquid—this prevents mold from forming on any exposed surfaces and ensures proper fermentation.

Loosely cover the jars with a lid or cloth (don't seal tightly yet, as fermentation produces gases that need to escape). Leave them at room temperature, away from direct sunlight, for 5 to 10 days. Start tasting around day 5—I prefer my fermented radishes with a crisp texture and tangy bite, so I typically pull mine around day 7, but this is really about your personal preference. Once they reach your desired flavor and crunch, you can seal and refrigerate to slow fermentation and enjoy them over the following weeks.