suっぱいppai
1.

Describes a taste that is sharp and tangy, often experienced when consuming citrus fruits or fermented products, creating a sensation that can cause a puckering reaction in the mouth.

2.

Pertains to a flavor profile that can evoke feelings of discomfort or aversion, commonly associated with certain foods that may be unpleasant for some individuals.

3.

Indicates a flavor that resembles vinegar or other acetic substances, often identified in traditional Japanese foods like pickled plums (umeboshi) or sour fruits.

Example:

すっぱい木においしい林檎はならない。

あまず甘酸amazuっぱいppai
1.

Describes a flavor or aroma that combines elements of sweetness and acidity, creating a taste that is both pleasing and tangy.

2.

Expresses a complex emotional state that is pleasurable yet tinged with a sense of sadness or nostalgia, often related to memories of first love or unfulfilled longing.