It must possibly be SUGAR , there's nothing sweeter than SUGAR
sugar
Nothing really makes it taste sweet. It's your taste buds that determines that. So really nothing makes thing sweet. That's just how food is.
The sweet potato has natural sugars in it that makes it sweet to the taste.
Sugars
There is no cell organelle that makes an apple sweet. The glucose that is produced by the cells is what makes the apple taste sweet.
The dissolved CO2 in fizzy drinks is bitter. Sugar makes the fizzy drinks taste good by covering the bitter taste with a sweet flavor so you want to drink it.
Taste and temperature.
Sweet in Japanese is 甘い (amai). It can refer to the taste of something sweet, like sugar, or be used more broadly to describe something as charming or cute.
A liqueur. They are sweet and mask the alcohol taste pretty well.
Sugar
I guess its because you are so used to the sweet fruity taste of the drink and it tastes odd when you mix it with the taste of minty toothpaste.
A food that is sweet will not taste good after you have been getting or drinking something that is sweet as well.