Possible Clues:

• Split mechanisms with no name, weirdly
• One dabbled, capriciously, and improvised
• It's well for one's superior
• Charlie uses a branch of science to disrupt those occultists
• Consider that the experimenter tainted ingredients inside
• Cook lifting cep from saucepan - it's a bit hot there
• Often, he brings bag over with a present, to start with, and has a great way with words
• Impolite and indecorous to leave Northern Ireland in awful outfit
• Use basin, evenly mixing in oil, for sauce using 19 down
• Up with Ben in the mill, messing with weight tied to a string