If there a heavier blade oil that is still food safe than mineral oil to protect blades. Or at least nothing with chemicals. A natural oil.
Not sure that I would want to use something that "dissolves carbon on contact". The carbon in blade steel is most important for grain size and hardness. That's why most are made of high carbon steel.
Yes there is mate called Frog lube
FrogLube® is a cutting edge biodegradable lubricant made from “USDA Certified Food-Grade”. All ingredients are produced in the USA using a proprietary formula. It is a non-toxic substance that dissolves carbon on contact. It has a heavy specific gravity, which enables it to ‘season’ the metal by absorption deep into the pores. Using FrogLube® results in a durable dry slick wax-like surface that reduces friction, eliminates fouling, and destroys rust. FrogLube® is safe for plastic, urethane, nylon, and wood.
FrogLube® will not harm the environment. It can be disposed of without the need for prohibitive HAZMAT controls. Employees will be protected from the effects of working in and around toxic chemicals.
FROGLUBE® IS A BIODEGRADABLE LUBRICANT, CLEANER AND PROTECTANT.
CONTAINS NO PETROLEUM OR WATER.
NON-HAZARDOUS IN EVERY WAY.
PLEASANT MINT SMELL.
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yep you could go with Ballistol oil that is safe and food grade.
and you can get it from here at Amazon
- Ballistol Oil 50 ml fluid is one of the few alkaline oils
- It does not resinify even in decades, is complete biodegradable, skin-friendly and food-safe
- Ballistol is a penetrating oil that creeps into the finest angles