What it is
Hemp holds them; a tare picks the better ones once they have settled on the seed. You cook hemp until it splits, feed it little and often down a crease, hook maggot until they graze, then switch. It is a 16 June tactic on rivers, and a lesson as much as a method.
A tin of cooked hemp is allowed if you do not want the saucepan. Tares are not a magic bait on a peg that has no roach.