Heat oil in a wok or pan on high heat
Add the onion and 1 chopped spring onion and fry for a minute. Add the ginger and garlic and fry for a minute
Add the veggies and chilli and fry for another minute. Veggies should still be crunchy
Add the sliced spring onion
Mix in the vinegar and soy sauce. Add some pepper and salt but not too much as the soy sauce has salt
Allow the veggies to cool
Keep the spring roll wrappers covered between a damp clean kitchen towel
Place a wrapper, like a diamond shape, on a flat surface. One corner pointing towards you. Place a tablespoon of the filling on the one corner. Fold the corner over the filling. Fold the sides like an envelope and roll the wrapper firmly, like a cigar. Brush the edges with the flour paste to seal
Heat about 2 cups vegetable oil and deep fry them in hot oil until slightly brown on all sides. Or you can shallow fry them, on medium heat, in 2 tablespoons oil, ensuring you keep turning them so they brown evenly on all sides. Drain on paper towels
Serve hot with sweet chilli sauce