Shrimp Pork Shumai

Ingredients

• 8 oz (240 g) ground pork (can substitute with chicken) with higher fat content
• 6 oz (180 g) peeled and deveined shrimp, coarsely chopped
• 1 shallot, finely minced
• 1 tsp peeled and finely grated ginger
• 1 large egg
• 1 tablespoon katakuriko (potato starch)
• 1 tablespoon sake
• 1/4 teaspoon each sea salt and freshly-ground pepper
• A good pinch of raw brown sugar
• 1 tsp sesame oil
• 20 – 24 small wonton skins
• Soy sauce and rice vinegar for serving (suggested ratio is 1:1 or to your preference)
• Karashi (Japanese mustard; also called, wagarashi), for serving