Question

why do our mouth starts watering by hearing the words like lemon and tamarind?

Answer 1

For example, whenever we eat lemon or warhead candies, our mouth will start producing a lot more saliva to dilute the sourness in our mouth. ... Or to put it simply, our brain associates mouth-wateringwith sour food because every time we take these food, our salivary glands kick into overdrive

Answer 2

Answer:

our mouth waters when we see a tamarind pod