If you have cornstarch on hand, use it; otherwise, try a little flour.
Wiktionary
Origin of On-hand
From Middle English *onhande, *onhende, from Old English onhende (“on hand, demanding attention”), equivalent to on- + hand. Cognate with Icelandicáhendur (“within reach”). Compare offhand.
From
Wiktionary
On-hand Sentence Examples
These entities are not created by mathematicians, they are employed by them, and their definitions should point out the construction of the new entities in terms of those already on hand.
At Wheal Cock near St Just in Cornwall the protecting roof was so thin that holes bored for blasting more than once penetrated to the bed of the ocean, and wooden plugs were kept on hand to drive into such holes when this occurred.
The current revenues of the state for the year ending on the 1st of July 1909, including cash on hand at the beginning of the year, were $4, 1 4 8, 734; for the same year the expenditures were $3,358,847.
The notes are not legal tender, and it is forbidden to count them as " cash on hand " in bank returns, but ample safeguards both as to issue and redemption inspire full confidence in their employment as a substitute for gold.
On the 30th of June 1908 the bonded debt of the Territory was $3,979,000; there was on hand net cash, without floating debt, $677,648.48.