Can I use bicarbonate of soda or vinegar to clean my silver?

Yes, but we strongly advise against it.

Grandmother's recipes may be environmentally friendly and save you having to buy other products, but they are not specifically designed for silver. You run the risk of damaging your pieces by using these household products if you use them in the wrong way. What's more, they don't protect against oxidation after washing, so your objects will quickly become oxidised again.