1. Filling preparation: Soak the dried mushrooms in cold water for 1 hour (the smell may seem a bit strong but they give an extra flavor to the filling).
2. Soak the vermicelli in cold water for 10 minutes.
3. Blend and mix the pork, onion, carrot, mushrooms, vermicelli, bean sprouts, and eggs. Add some pepper and fish sauce for seasoning.
4. To roll the spring rolls: Dip a rice paper wrapper in water and spread it on a cotton cloth. Let it soften for 30 seconds. (if it's not soft enough, you can moisten it with a few extra drops of water).
5. Place a tablespoon of filling on one edge and roll the wrapper. Grandma's secret: do not roll the spring roll too tightly, otherwise it may burst during cooking.
6. Keep the spring rolls separated on a cloth as they are very sticky at this stage!
7. Cooking: Fry over medium heat until they are golden brown. You can add two cloves of garlic to the frying oil, it gives a very mild flavor to the spring rolls.
8. And there you have it! Serve the spring rolls with lettuce leaves, mint, and cilantro. You can dip the spring rolls in a sauce made of fish sauce, water, lemon juice, and chili paste.