Beef celery dumplings - Simple Indeed

Ingredients

• ​ 450g ground beef
• 1 celery heart (about 1lb/450g), minced and (3/4 to 1 cup of) juice extracted
• 1 Egg
• 3 garlic cloves, minced
• 2 scallions, minced
• 1 small piece of ginger, grated or minced (about 1 tbsp)
• 1 tbsp light soy sauce
• 1 tbsp dark soy sauce
• 1/2 tbsp oyster sauce
• 1 tsp Sesame oil
• 1/4 tsp salt
• 1/4 tsp pepper (or to taste)