Grilled Banh Mi For A Party

Ingredients

• vegetable oil (for grill)
• 3 medium carrots, peeled, very thinly sliced lengthwise with a vegetable peeler
• 1 english hothouse cucumber, thinly sliced into rounds
• 1 tsp. diamond crystal or ½ tsp. morton kosher salt, plus more
• 6 red radishes, trimmed, thinly sliced
• 1 large jalapeño, thinly sliced
• ⅓ cup unseasoned rice vinegar
• 1 tsp. plus 1 tbsp. sugar
• 2 lb. ground pork
• 1 large shallot, very finely chopped
• 6 garlic cloves, finely grated
• 2 tbsp. fish sauce
• 2 tbsp. soy sauce
• 1½ tsp. chinese five-spice powder
• 8 kaiser or ciabatta rolls, split