Rub the leaves of each plant
By rubbing the leaves of each plant between your thumb and the index finger, you need to identify the various types of flavours of basil, lavender, orange, spearmint, banana, lemon, chocolate, pineapple and apple. When you will press the leaves, they will release a specific aroma or a taste, which will help you in classifying the different mint types.
Differentiate through menthol taste
Each type of mint has a specific menthol-flavoured smell and taste, which can help you identify peppermint. The kinds of mint which contain menthol are Moroccan, Basil, Orange Bergamot, Lavender, and Chocolate. If you have an upset stomach, these mint types can be extremely useful. They play a vital role in herbal medicines all around the world and especially in some of the Asian countries.
Gray & fuzzy mints
You will come across some mints which are gray and fuzzy. These are either apple, pineapple or Egyptian. These mints are considered to be cooking mints and are often used to enhance the taste of dishes by some of the best cooks. The use of mint in cooking is very common some of the Asian countries like India, Pakistan, Sri Lanka and Bangladesh.
You can do a short herbal course from any institute in your area, which can really help you become an expert in identifying different types of mint.