yearning

To long, have a strong desire (for something).

“All I yearn for is a simple life.”

To long for something in the past with melancholy, nostalgically.

To have strong feelings of love, sympathy, affection, etc. (toward someone).

To be pained or distressed; to grieve; to mourn.

To pain; to grieve; to vex.

To curdle, as milk.

A wistful or melancholy longing.

“She had a yearning to see her long-lost sister again.”

Rennet (an enzyme to curdle milk in order to make cheese).