1. Soak in salt water for about half an hour before eating, because pineapple pulp contains a "pineapple enzyme" which can decompose protein. If we don't soak it in salt water first, this enzyme will stimulate the young epidermis of oral mucosa and lips, which will make us tingle.

2, and salt water can destroy this enzyme. If the soaking time is not enough, pineapple enzyme is not completely inactivated, which may still cause allergies.