Iṃgor bites into an apple while taking one of the bottles and strapping it to his belt, dehydration is the quickest way to die if deprived of resources; besides, water in general is really useful when preparing food.
He then asks Joshua in a rather silent, but polite tone: "If you don't mind, I'd like to know how to gain familiars rather quickly, and currently see no reason why eating would interfere with teaching. If there is a reason, please let me know."
While speaking, his necklace reflects some light into Joshua's eyes.