For the slaw:
¼ cup distilled white vinegar
¼ cup sugar
½ cup julienned carrots
½ cup julienned daikon radish
Kosher salt, to taste

For the seasoned pork:
1 tsp. canola oil
1 tbsp. finely chopped yellow onion
12 oz. ground pork
2 tbsp. hoisin sauce
2 tbsp. soy sauce
1 tsp. toasted sesame oil
½ tsp. Asian-style hot sauce
½ tsp. Chinese five-spice powder
½ tsp. red food coloring
¼ tsp. onion powder
¼ tsp. garlic powder
¼ tsp. freshly ground black pepper, plus more to taste

4 10″ Vietnamese baguettes or Portuguese rolls, split
½ cup mayonnaise
8 ⅛″-thick slices Vietnamese-style pork roll (cha lua) or bologna
8 ⅛″-thick slices Vietnamese-style salami or ham
½ cup cilantro sprigs
½ medium English cucumber, cut lengthwise into 4 thick slices
Asian-style chile oil, to taste