You might put a very tiny amount of butter on your toast, and describe it as toast with scant butter. Perhaps you are afraid of getting fat if you eat too much butter, or perhaps you are just out of butter, who knows.
A scant means just less than, so if it was 1/2 cup scant butter, its just below half a cup :)
"Scant" is not a type of flour. "Scant" is a cooking term that means "almost" or "just slightly less than." A recipe would not call for "scant flour" but a "scant cup" or a "scant Tablespoon" of flour, meaning not quite a cup or not quite a Tablespoon.
A scant of sugar is a very small amount of sugar.
Ricky lee Jones is a scant singer....
Barely amounting to as much as indicated - example: a scant two hours; a scant cupful. Having an inadequate or limited supply - example - (usually followed by of ): scant of breath.
A scant of oil is...not enough, or barely a sufficient amount.
Onions were scant at the grocer's, again.
scant 3/8 cup sugar
We were scant of breath after the lengthy climb.
Scant milk means "milk just barely".
The marooned passengers were concerned by the scant food supplies on the island. The professor paid scant notice to the complaints about his teaching.
I could only find a scant amount of information on the topic.
Scant is an adjective meaning hardly adequate. This is why a 'scant week' is still a seven day week, but just barely so.