In olden days,cheese was prepared by:

Statement $X$: $LAB$ (Lactic Acid Bacteria) is very useful for the digestive system.
Statement $Y$: $LAB$ protects us from harmful bacteria in the stomach.

The starter or inoculum is added to fresh milk in order to convert milk into curd. The term starter or inoculum here refers to:

During the production of bread,it becomes porous due to the release of $CO_2$ by the action of:

The dough used for making dosa and idli is fermented by ......... and it appears puffed up due to the production of ......... in it.

Toddy is a product of which process?