i'm going to buy an all clad cookware set but i was wondering what the difference in the copper core and the all copper.. It seems like that all copper weighs a lot more but which one is the best for cooking?
I'd guess that clad copper would be best as although copper conducts heat better than other metals (ensuring even cooking), it can be reactive to acids, producing a green oxide which may taint / tint your food, whereas copper cored cookware would retain the heat conductivity of copper, whilst preventing the oxidisation problem.
Copper core is probably more practical. All cooper is lined (to protect from a reaction with acidic foods like tomatoes) and will need to be re-lined in time. Either way, All-Clad is great stuff, but I'd be perfectly happy with copper core.
CPVC is acceptable in may areas. PEX pipe is more of a platic hose that is gaining in popularity. There is also Grey schedule 80 PVC than can carry pressure and hot water. Codes are different in different cities because of the unios. They do not want just anyone to be able to install water lines and PVC is somethiong that just about anyone can do. White schedule 40 PVC is not rated for hot water. I can be used temporarily for water supply, but will not pass code inspections and is likely to break over time especially if used for hot water.
