It tastes sour. Other tastes are sweet, bitter and salty. Bitter is alkaline, the opposite of acid in Ph. And salty is the combination of an acid and a base (alkaline), which is a salt.
The newest of the five basic tastes to be discovered is umami, meaning a savoy taste. The other four tastes are sour, sweet, bitter and salty.
Lemon juice is the most popular because it is acidic. This is why it tastes sour is the interaction of the human taste buds and the acid. Bacteria do not like to live in environments that has a high concentration of acid. The pH level will be low in its environment and the most common bacteria like pH levels in the middle.
There are different taste buds in our tongue. There is sweet at the front, salty at the middle, and bitter and sour all way further to the end of your tongue. So when we eat certain types of food, such as cucumber, which is sweet in our tongue, our other taste buds do not function yet but our sweet taste bud does.
Some foods that are sour are lemons, grapes, and tamarind. Some types of oranges and some melon can also have a sour taste to them.
It could be a granny smith Apple. Granny smith apples are the sourest apples even though, in my tastes, they are not that sour. They could be though depending on what you think is sour.
In my opinion,yes,it's made out of sour milk and tastes like sour cream!
Stomach Acid tastes sour.
Acidic = sour. Think lemons
Vinegar is a weak acid and like all acids tastes sour.
It smells like death and it tastes like SOUR death. Smosh.
It tastes like red bull with a sour apple/Lime flavor
The tongue however does taste things that are: bitter, salty, sour and sweet.
Acidity, and low pH. If a Gran apple is allowed to ripen fully on the tree so that it has a red blush, it will develop much more sugar and flavor so that it is no more tart than the average apple variety.
Tomato.
The four basic tastes are bitter tastes, sweet/sugary tastes, salty tastes and sour tastesSweet, Salty, Sour and Bitter.
Granny Smith apples have a sour taste when they are not too ripe, but when they are they sometimes have a sweet taste