Slow Cooker Korean-Style Beef Tacos

Ingredients

• 3 garlic cloves (minced)
• 1 ½ tablespoons rice vinegar
• ¼ teaspoon kosher salt
• ½ tablespoon grated fresh ginger
• 1 cup shredded carrots
• 12 lime wedges (for serving)
• 1 teaspoon toasted sesame oil
• ½ teaspoon crushed red pepper flakes
• ¼ cup chopped onion
• 1 tablespoon light brown sugar
• 1 ¼ lbs lean and trimmed flank steak (cut across the grain into 4 pieces)
• ¼ cup reduced- sodium soy sauce
• 2 cups cucumber matchsticks (thin, short slices)
• 12 6 inch corn tortillas
• 2 tablespoons gochujang sauce
• 1 cup chopped green leaf lettuce
• 1 scallion (sliced)