Add 1/4 cup of the dried strawberries into a food processor or grinder. Grind into a course powder.
Add the sweet white rice flour, sugar, salt, unground dried strawberries, and ground strawberries into a large microwave safe bowl.
Add 1 1/4 cup water and stir. Cover the bowl and place in the microwave for 1 minute. Remove from the microwave and stir. It should be thick and slightly translucent around the edges.
Place the bowl back in the microwave for another 45 seconds. Remove and stir with a wooden spoon. At this point, it should be very sticky and hard to mix. If it's still loose, add 2 tablespoons of white rice flour, stir, and place back in the microwave for another 15 seconds until sticky consistency is achieved.
Pour 1/2 cup of the potato starch onto your working surface. Empty the contents of the bowl onto your surface and shape the dough into a ball. The dough will be incredibly sticky, so apply additional potato starch to your hands as necessary.
Divide the dough equally into four pieces. Then, divide one quarter of the dough into thirds. Working with one piece, shape the dough into a ball by shaping your index finger and thumb into a ring and pressing the dough through the ring. (See video below). Repeat with each of the pieces.
Dust each piece with a little extra potato starch before serving.