Step 1

In a large deep skillet over medium high heat, add oil, garlic and ginger and cook for 1 minute, until garlic becomes fragrant.

Step 2

Add onions and cook for 3 minutes, until onions are translucent.

Step 3

Add potatoes and cook for 4 minutes, stirring often to prevent the ingredients from burning.

Step 4

Add zucchini and shrimp and cook for 3 minutes, stirring often.

Step 5

Add spinach, dashi broth, soy sauce, sugar, sake and mirin and cook for 3-4 minutes, until the potatoes are tender.

Step 6

Add mixture of potato starch and water and stir well, until the sauce thickens (about 1 minute).

Step 7

Turn the heat off and serve on top of rice with white pepper.