Ground Pork Stir Fry

Name: Ground Pork Stir Fry
Prep time: 10 min
Cook time: 20 min
Total time: 30 min
Cuisine: Asian
Ingredients: ½ pound ground pork; ½ cup mushrooms (sliced and roughly chopped); ½ medium onion (sliced into wedges); 1 cup cucumbers (cut into match sticks); 1 tablespoon grated fresh ginger; 3 cloves garlic (minced); 1 cup chopped baby bok choy (about 3 ounces (or 1 ounce baby spinach and 1 stalk celery, sliced)); 1 cup chopped spinach (about 1.5 ounces); 2 Tablespoons gluten-free soy sauce (divided); 1 teaspoon apple cider vinegar (or white vinegar); dash red pepper flakes (optional); green onions (optional garnish); oil (for cooking)