Machshirin 6:3-4

Machshirin 6:3

All eggs are assumed to be ritually clean except for those from vendors of liquids (whose hands are frequently wet); if they sell dried fruit with the eggs, then they are ritually clean (because they protect the eggs from moisture). All fish are assumed to be ritually unclean; Rabbi Yehuda says that slices of a fish called iltit, Egyptian fish brought in a basket and a fish called kulyas from Spain are presumed to be ritually clean. All brine is assumed to be ritually unclean. An unlearned person is trusted to say that any of these are ritually unclean except for fish because learned people trust unlearned people with them (i.e., with the things other than fish). Rabbi Eliezer says that if any volume of water fell into ritually clean brine, it’s rendered unclean.

Machshirin 6:4

Seven liquids render foods susceptible to ritual impurity: dew, water, wine, oil, blood, milk and bee honey. Hornet honey is ritually clean and one is permitted to eat it.