Here is my simple version of lumpia.
2 lbs ground pork
1 lbs raw shrimp coarsely chopped
1 Large Onion minced
1 Medium Carrot minced
2 Tbsp Mirin
2 Tbsp Rice Wine Vinegar
2 Tbsp Hoisin Sauce
2 Tbsp Salt (to taste)
4 Tbsp cornstarch or flour (I used oatmeal flour)
Pepper (to taste)
Mix all ingredients, taking care not to handle the meat too much (as it toughens the pork). Wrap a couple and fry that first to make sure the seasoning is sufficient.