Education experts often point to stable leadership as a crucial ingredient in successful schools.

They're full of vitamin C, a crucial ingredient for your complexion and hair.

Heavy water can be a crucial ingredient in the manufacture of nuclear weapons.

It has left out the most crucial ingredient: the Bollywood star.

This recipe has only two or three crucial ingredients, but it is easy to vary.

Unfortunately, that seems to have left little room for other crucial ingredients, like panache.

Whatever it is, it seems to be the crucial ingredient for attention these days.

But before the 19th century, farmers did not know that nitrogen was a crucial ingredient or how it got into the soil.

Another crucial ingredient this production has is powerful, attractive voices.

However, the most crucial ingredient in tackling this fraud is political will.