Cucumber Kimchi Recipe Vegan: Spicy Fermented Crunch in 5 Days

This vegan cucumber kimchi delivers bold, spicy flavor with satisfying crunch in just 5 days. The fermentation process transforms fresh cucumbers into a tangy, complex side dish that’s both probiotic-rich and completely plant-based.

The secret lies in the balance of seasonings—gochugaru for heat, garlic for depth, and ginger for brightness. Each ingredient plays a crucial role in developing that signature kimchi taste without any animal products.

You’ll end up with crisp, vibrant cucumber slices coated in a fiery, umami-packed paste. The texture stays perfect, and the flavors intensify as it ferments, making it ideal for serving alongside meals or as a snack.

Store it in an airtight container in the fridge to extend the fermentation and enjoy the evolving taste over time.

Ingredients for Cucumber Kimchi Recipe Vegan

Fresh cucumbers and bold seasonings create this tangy, spicy fermented side dish in days.

The cucumbers are key here—English or Persian varieties work best for their thin skins and crisp texture. H Mart or Korean markets will have the best gochugaru (look for coarse flakes, not fine powder). Diamond Crystal kosher salt is ideal for the brine (its larger crystals dissolve evenly). For the ginger and garlic, fresh is non-negotiable—no pre-minced jars here.

No gochugaru? Crushed red pepper flakes at half the amount plus a pinch of paprika for color gets you close. Fish-free soy sauce is critical for the vegan promise—check labels, as some brands sneak in fish extract. The daikon radish adds crunch, but jicama or carrot can sub in. Coconut sugar lends complexity, but regular sugar works too (just use a touch less).

This ferments in the fridge for up to 5 days minimum, but stays good for 2 weeks. Store in a clean glass jar, pressing cucumbers under the liquid to prevent mold. The flavor keeps evolving—tangier and funkier as it ages.

Step-by-Step Instructions for Vegan Cucumber Kimchi

This fermentation method delivers bold flavor with minimal effort—just patience and attention to detail.

Step 1: Salt and Drain the English Cucumbers

Slice the 2 lb English Cucumbers into thick half-moons or spears, leaving the skin on for texture. In a large bowl, toss them with the 0.5 cup Kosher Salt until every piece is evenly coated. The salt will draw out excess water, which is crucial for achieving that perfect crunch.

Let them sit at room temperature for 1 hour, stirring occasionally. You’ll see the cucumbers release a significant amount of liquid—this is exactly what you want. After the hour, rinse the cucumbers thoroughly under cold water to remove excess salt, then drain well in a colander. Press gently to extract any remaining water.

Step 2: Prepare the Kimchi Paste Base

In a medium bowl, combine the 0.5 cup Gochugaru, minced 8 cloves Garlic Cloves, grated 2 tbsp Fresh Ginger Root, 0.25 cup Fish-Free Soy Sauce, 0.25 cup Rice Vinegar, and 2 tbsp Coconut Sugar. Stir until the mixture forms a thick, vibrant paste. The Gochugaru gives the signature red color and moderate heat.

Add the 1 tbsp Korean Red Pepper Paste for depth and a touch of umami. This paste should be fragrant and slightly sweet, balancing the heat from the Gochugaru. If it seems too thick, a splash of water will loosen it without diluting the flavor.

Step 3: Combine Vegetables and Paste

In a large mixing bowl, combine the drained English Cucumbers with the 0.5 cup Daikon Radish and the white parts of the 6 whole Green Onions. Pour the kimchi paste over the vegetables and use your hands to massage it in thoroughly. Every piece should be evenly coated—this ensures consistent flavor in every bite.

The daikon adds a refreshing crunch that contrasts beautifully with the cucumbers. Save the green onion tops for garnish later. Wear gloves if you’re sensitive to the heat or the garlic—this mixture can be intense on bare skin.

Step 4: Pack and Begin Fermentation

Transfer the mixture to clean glass jars or airtight containers, pressing down firmly to remove air pockets. Leave 1 inch of headspace at the top—the vegetables will expand slightly as they ferment. Sprinkle the reserved green onion tops and 1 tbsp Sesame Seeds on top for garnish and extra texture.

Seal the jars loosely (or use fermentation lids if you have them) to allow gases to escape. Store at room temperature, away from direct sunlight, for 1-2 days. You’ll start to see bubbles forming—this is the fermentation process working its magic.

Step 5: Cold Ferment and Store

After 2 days at room temperature, transfer the jars to the refrigerator to slow down fermentation. Let it cold-ferment for at least 3 more days before eating. This waiting period allows the flavors to develop fully—the cucumbers will soften slightly but retain their crunch, and the spice will mellow into a complex, tangy heat.

Your kimchi will keep in the fridge for up to 1 month, and the flavor will continue to evolve. The longer it ferments, the tangier it becomes. Taste it periodically to find your preferred balance of spice and sourness.

Perfect Pairings for This cucumber kimchi recipe vegan

Rice and Noodles

Serve this kimchi alongside steamed jasmine rice to soak up the spicy, tangy juices. The cool rice balances the heat perfectly. For a heartier meal, try it with cold soba noodles—the nutty buckwheat flavor pairs wonderfully with the fermented crunch. 🥗

Korean Favorites

Combine with bibimbap bowls for an authentic Korean experience. The kimchi adds a refreshing contrast to the warm rice and vegetables. It also works beautifully in vegan kimchi jjigae—just add tofu and mushrooms for a comforting stew.

Fresh Accompaniments

Balance the spice with cooling sides like sliced Persian cucumbers or butter lettuce cups. The crisp texture and mild flavor provide a nice counterpoint. I also love it with edamame sprinkled with sea salt for a protein boost.

Drink Pairings

A cold Korean barley tea (boricha) cuts through the heat while complementing the flavors. For something fizzy, try ginger beer—its spicy-sweet profile mirrors the kimchi’s complexity. I always keep sparkling water with lime on hand for a quick palate cleanser. ✨

Fusion Ideas

Use this kimchi as a topping for vegan tacos or grain bowls. Its bold flavor elevates simple dishes instantly. I’ve even stirred it into hummus for a spicy dip that disappears fast at parties.

Simple Snacks

Enjoy it straight from the jar as a snack, or layer it on avocado toast for a Korean-inspired twist. The crunch and heat wake up any meal. A sprinkle of toasted sesame seeds adds extra texture and visual appeal.

Frequently Asked Questions