Yeah 4 of the 5 are just variations of "don't put food and drink in plastic containers". But I've got another one: use rock salt instead of sea salt. This migh

Yeah 4 of the 5 are just variations of "don't put food and drink in plastic containers". But I've got another one: use rock salt instead of sea salt. This might not be feasible; most or all salt I see in sea salt, but it seems fairly obvious to me that rock salt is unlikely to contain any plastic, whereas sea salt is likely to contain plastic.