Every ingredient in this recipe is doing real work. Here’s a closer look at why the lineup is built the way it is:

2 cups shredded carrots Carrots are the backbone of this topping. They add natural sweetness, vibrant orange color, and—most importantly—exceptional crunch that holds up beautifully in the brine over several days. Shredding them rather than slicing ensures they absorb flavor quickly and are easy to pile onto tacos.

1 cup shredded cabbage Cabbage adds bulk, a mild peppery flavor, and a slightly different texture than the carrots. It also absorbs the brine deeply, taking on the cumin and oregano flavors especially well. Green cabbage is the standard choice, but red cabbage adds beautiful purple color if you want a more vibrant jar.

1/2 small red onion, thinly sliced Red onion brings a sharp, pungent bite that mellows beautifully in the brine over time. After a few hours in the vinegar, raw onion transforms into something softer, slightly sweet, and far more approachable. It also turns a gorgeous pink color that makes the jar look stunning.

1–2 jalapeños, thinly sliced Jalapeños are the heat source. Thinly sliced, they release their capsaicin into the brine and infuse the whole jar with a fresh, vegetal spice. One jalapeño gives you mild heat; two brings it closer to a restaurant-level kick. Leave the seeds in for more heat, or remove them for a gentler spice level.

1 bell pepper, thinly sliced Bell pepper adds sweetness, color, and a crisp texture that complements the crunch of the carrots and cabbage. Red or orange bell pepper brings extra sweetness, while green bell pepper adds a slightly more vegetal, bitter note.

2 cloves garlic, sliced Sliced garlic infuses the brine with savory depth over the marinating period. The longer the jar sits in the fridge, the more pronounced the garlic flavor becomes—in the best possible way.

1 cup white vinegar White vinegar provides the clean, sharp acidity that preserves the vegetables and gives the topping its classic tang.

1 cup water Water dilutes the brine to a balanced pickling strength—enough to preserve and flavor the vegetables without being overwhelmingly sharp.

2 tbsp sugar or honey This small amount of sweetness makes a big difference. It softens the acidity of the vinegar and creates the slightly sweet-tangy balance that defines great pickled vegetables. Honey adds a mild floral note that works especially well with the cumin and oregano.

1 tbsp pickling salt or kosher salt Salt seasons the brine, draws moisture from the vegetables, and helps maintain crunch throughout the refrigerator life of the jar.

1 tsp dried oregano Oregano is a classic companion to cumin in Mexican cooking. It adds an herbal, slightly floral depth that grounds the brine and gives it that unmistakably restaurant-style character.

1 tsp cumin seeds Cumin is the signature spice that sets this topping apart from a plain pickle. Earthy, warm, and aromatic, cumin seeds infuse the brine slowly and give it that distinctly Tex-Mex personality. Using whole seeds rather than ground cumin keeps the brine clear and provides bursts of flavor when you bite into one.

1 tsp black peppercorns Whole peppercorns add mild heat and gentle spice that builds over the marinating period without overpowering the other flavors.

1/2 tsp red pepper flakes Red pepper flakes amplify the heat from the jalapeños and add a different kind of lingering warmth that keeps things interesting.

1 bay leaf Bay leaf adds a subtle herbal complexity that rounds out the brine. It’s one of those ingredients that you’d miss if it weren’t there, even if you couldn’t identify it by name.