make sour

We have never noticed any description of food which he does not make sour, rather than eat it when sweet.

The people gather and boyl them to make sour pottage to quench the thirst.

It is because bases neutralize acids that you put baking soda with sour milk when you make sour milk pancakes or muffins.

“Fru Astrida did not make sour faces at him, nor call him a young savage,” replied Richard.