I've bought a couple of jars from John Lewis (one like this and one like this with the intention of pickling some cucumbers.
But I'm getting a bit muddled about how to prepare the jars, then how to seal them properly.
I've washed them in soapy water. Do I need to heat them in the oven? How do I seal them? I've read some stuff about putting in a pan of water but do I put them under the water, or leave the tops out, or what?