Step 1: Prepare your vermicelli noodles according to package instructions. Typically, you'll soak them in hot water for 3-5 minutes until tender, then drain and rinse with cold water to prevent sticking. Set aside.
Step 2: If your shrimp are not pre-cooked, boil or steam them until pink and cooked through (about 2-3 minutes). Let cool completely, then slice each shrimp in half lengthwise. Prepare all other vegetables and herbs by washing and julienning/chopping as specified.
Step 3: Set up your rolling station. Fill a wide, shallow dish (like a pie plate) with warm water. Arrange all your prepped ingredients, the softened noodles, and shrimp neatly around your workstation.
Step 4: Dip one rice paper wrapper into the warm water for about 15-20 seconds. It should be pliable but still slightly firm, as it will continue to soften as you work. Do not over-soak, or it will become too fragile.
Step 5: Carefully lay the softened wrapper flat on a clean, damp cutting board or large plate. Arrange a few pieces of lettuce on the lower third of the wrapper, leaving about an inch from the bottom edge.
Step 6: Top the lettuce with a small handful of vermicelli noodles, then some shredded carrot, cucumber, and a generous sprig of mint and cilantro.
Step 7: Place 2-3 shrimp halves (cut-side up for presentation) on top of the herbs and vegetables, slightly above the main line of fillings. This allows the shrimp to show through the translucent wrapper.
Step 8: Fold the bottom edge of the wrapper up over the fillings, tucking it in tightly. Then, fold in the left and right sides of the wrapper towards the center.
Step 9: Roll tightly from the bottom upwards, creating a snug, cylindrical spring roll. Place the finished spring roll seam-side down on a platter. Repeat with the remaining wrappers and fillings, keeping finished rolls separated to prevent sticking.
Step 10: Prepare the peanut dipping sauce: In a small bowl, whisk together the peanut butter, hoisin sauce, soy sauce, lime juice, honey (if using), and minced garlic. Gradually add warm water, 1 tablespoon at a time, until the sauce reaches your desired creamy consistency. Taste and adjust seasonings, adding red pepper flakes for heat if desired.
Step 11: Serve the fresh spring rolls immediately with the homemade peanut dipping sauce. Enjoy!