I'm looking to get a kit to start brewing and most do not come with a kettle. I was looking around in the basement the other day and found a five or six gallon kettle, but it has some sort of coating on it, it could be enamel? However all the kettles i see for sale for brewing seem to be stainless steel. Does anyone know would this matter? I'm sorry if this is a dumb question, i just don't want to spend 40 bucks if i don't need to.