Step 1: Prepare all fillings: Cook shrimp if not pre-cooked. Peel, devein, and slice in half lengthwise. Cook vermicelli noodles according to package instructions, drain, and rinse with cold water to prevent sticking. Prepare all vegetables and herbs by washing, drying, and slicing them into thin, manageable pieces.
Step 2: Arrange all prepared ingredients neatly on a large platter or cutting board, ready for rolling. This is your spring roll assembly line.
Step 3: Prepare the peanut dipping sauce: In a small bowl, whisk together peanut butter, hoisin sauce, lime juice, soy sauce, warm water, sriracha (if using), minced garlic, and honey/maple syrup until smooth and well combined. Add more water if needed to reach desired consistency. Set aside.
Step 4: Fill a shallow dish (like a pie plate) with warm water. The dish should be wider than your rice paper wrappers.
Step 5: Take one rice paper wrapper and submerge it in the warm water for about 15-20 seconds. It should be pliable but still slightly firm, as it will continue to soften. Do not over-soak.
Step 6: Carefully lay the softened wrapper flat on a clean, damp work surface (a cutting board or a damp kitchen towel works well).
Step 7: Place a small piece of lettuce on the bottom third of the wrapper, leaving about an inch clear on the sides. Top with a small amount of vermicelli noodles, julienned carrots, and cucumber.
Step 8: Just above the other fillings, place 2-3 shrimp halves horizontally, cut-side up for a nice presentation. Add a few leaves of mint, cilantro, and Thai basil on top of or next to the shrimp.
Step 9: Fold the bottom edge of the wrapper up and over the fillings, tucking it in snugly to create a tight roll.
Step 10: Fold in both side flaps of the wrapper towards the center, ensuring the filling is neatly contained.
Step 11: Tightly roll the spring roll upwards from the bottom until you have a firm, neat cylinder. The tighter the roll, the better it will hold together.
Step 12: Place the finished spring roll seam-side down on a serving platter. Repeat with the remaining wrappers and fillings. Serve immediately with the prepared peanut dipping sauce.