No it does not contain Nickel, nickel is a metal and butter is made from milk solids (fat).
Customers complained of finding metal objects in the butter.
It's probably his bread and butter actually..
The equation for the butter melting process is one pot plus butter plus heat. If the heat is microwave then the equation would be one container (no-metal) with cover plus butter plus heat.
Peanut butter icecream, orange, apple, and lemon juice
The fact that sodium metal is soft enough to cut with a butter knife is a physical property. This property describes a characteristic of the substance itself without changing its chemical composition.
Varnish can help prevent rusting by acting as a protective barrier that prevents moisture and oxygen from reaching the metal surface. Butter does not prevent rusting because it does not form a barrier to protect the metal. Instead, butter is likely to attract moisture and potentially accelerate the rusting process.
You can - butter is simply cream with a little salt added and whipped till the fat binds and the water is driven out - it is then pressed into a mould. You can do it in the kitchen with a bowl and a wire whisk. If you're talking commercial production however, there could be a concern that the constant whisking would knock tiny metal particles into the churn and taint the flavour of the butter. But on the other hand, metal equipment is easy to sterilise.
Apple butter should never be cooked in a cast iron pot. The acid of the apple butter reacts with the chemicals in the metal, which gives the apple butter a metallic taste. Further, it may turn your mouth black. The majority of apple butter kettles are made of copper, which will not have the same reaction.
Welding pieces of metal is a physical change because the process does not alter the chemical composition of the metal. It involves melting and fusing the metal pieces together without changing their fundamental structure.
Butter is the physical state of being a solid, like a brick. Rusting is a physical change where the metal atoms of iron on the metal object combine with the atoms of another element, oxygen. This creates a new molecule, rust, or oxygenated iron.
On a metal spoon? well because the metal heats up faster then a plasic spoon, and plastic melts.