Boiling Pot
This is simply a vessel that can hold up to 20% more boiling wort than you will be casting out of it. So, for a 5-gallon batch, that means a 6-gallon vessel. If you are already doing "full-batch boils" as an extract brewer (as opposed to diluting with water at fermentation), your current pot will work. If a separate lauter tun is used, the kettle may also double as a mash tun. Your boiling kettle can be as simple as an enamelware pot or as expensive as a stainless steel vessel with a spigot. Again, your choice will be dictated by your budget, mechanical ability, and desires. Whereas the shape of the other vessels is not terribly important, the boiling kettle should be cylindrical; the kettle can then be used as a whirlpool for settling the hot break and pelletized hop debris.
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