I apologise in advance if these questions are answered elsewhere in this forum, and if they appear a bit naive, but any help is much appreciated.
circulator vs water bath
For my first sous vide equipment purchase I'm considering a circulator model as opposed to a water oven.
The portability of a circulator for visiting relatives etc, the ease of storage, and the flexibility of container to use with it, all appeal.
The reservation I have is that if you use a container without a lid will the heat escape faster and the circulator will have to work that much harder to maintain the temperature? The purpose built gastronorm machines on sale seem to vary in price and some appear quite expensive.
vacuum machine
Are there particular specifications of vacuum machine I should consider for medium to large joints of meat?
Thank you