1. In a glass pyrex dish, whisk together the first eight filling ingredients. Place the pressed tofu into the marinade, flipping it over to ensure it is well coated. Place in the refrigerator to chill for a few hours or overnight.

To make the wrappers

1. Place the flours, Ener-G/water and salt into a mixer. Blend until the dough is smooth and pulls away easily from the sides of the bowl, adding a bit more water as needed. Remove the dough, roll into a ball and place in another greased bowl and cover with saran wrap. Allow it to rest for about 30 minutes.
2. Separate the dough into four equal pieces. On a well-floured surface (I kept a small bowl of rice flour nearby), flatten the dough out as thinly as possible, using a rolling pin. Use a biscuit cutter to cut out perfect circle shapes, re-rolling any unused dough. Reroll each piece to maximize the thinness of the dough.

Next, prepare the shumai filling.

1. Using a large skillet, saute the tofu over medium-high heat, until well browned. Place into a food processor. Saute the thinly sliced shallots until well browned and add to the food processor.
2. Pulse several times until it is chunky but not overly smooth. Add in the cornstarch and pulse a few more times.
3. Shape the tofu mixture into small 1- to 1 1/2-inch spheres. If it doesn’t adhere well, add a bit more cornstarch to the mixture. Place a sphere into the center of one of the pieces of dough. Gently gather the corners up around the sphere, leaving the tofu mixture partially exposed.

To steam and serve

1. Place the finished shumai into a steamer basket lined with parchment paper or cabbage leaves and cover. Place the steamer into a wok or large skillet with several inches of water over high heat. Steam for 15-20 minutes, or until the shumai is soft and slightly transparent.
2. Serve sprinkled with the green scallions and ponzu sauce.