Prep the Filling & Crispy Shallots: In a bowl, thoroughly mix the 1.5 lbs of ground pork with 1 tsp fish sauce, 2 tsp sugar, 1 tsp chicken powder, and 1/2 tsp black pepper. Set aside. Soak the pre-sliced wood ear mushrooms in warm water for 30 to 40 minutes, then drain and chop finely.
The "Microwave Sweat" Fried Shallots: Peel and slice your fresh shallots, then microwave them for exactly 1 minute to draw out excess moisture. Blot completely dry with a paper towel. Fry in a generous amount of hot neutral oil on high heat for 10 seconds, then turn the heat down to low and simmer for 4 to 5 minutes until a pale golden color. Drain on paper towels and save that fragrant shallot oil!
Cook the Savory Pork Filling: Heat a large skillet over high heat and add a splash of your reserved shallot oil. Sauté the diced onion until slightly browned, then add the marinated ground pork. Cook the meat thoroughly, breaking it up into fine, loose pieces. Stir in the chopped wood ear mushrooms and pan-fry until most of the juices have completely evaporated. Transfer to a bowl and use kitchen shears to snip any large clumps into a very fine texture if needed.
Soak the Rice Paper: Fill a very wide bowl with warm water and stir in a spoonful of your reserved shallot oil to prevent sticking. Slide the rice paper sheets into the water one by one. Let them soak for 10 to 15 minutes until completely soft and pliable.
Shape and Roll: Lightly oil your work surface (countertop or large cutting board). Lay down one softened sheet of rice paper. Spoon a fine line of the pork filling onto the lower portion of the sheet, leaving a little bit of space at the bottom edge. Fold the bottom edge over the filling, then roll it tightly away from you into a neat tube shape.
The Magical Microwave "Steam": Arrange your rolled rice rolls on a microwave-safe plate and brush the tops with a thin layer of shallot oil. Place a damp paper towel gently over the top of the rolls and microwave on high for exactly 1 minute until silky and hot.
Assemble the Platter: Pile the hot rolls high on a plate. Garnish generously with thick slices of Chả Lụa, blanched bean sprouts, crisp cucumber slices, fresh Thai basil or mint, and a mountain of pickled carrots and daikon. Smother everything in a heaping handful of your crispy homemade fried shallots and drench with homemade Nước Chấm dipping sauce right before diving in!