The extended time and precise control of temperature make a very considerable difference to many foods and the results are well worth the extra effort.
Most sous vide cooking is at 55 to 65 degC it isn't just temperature but also the pasteurisation time which matters.
You don't *have* to go the cabinet-built mahogany and custom-made kettle route. A stout cardboard box, offcuts of 100mm PIR and a foam gun will see you right. IMLE hardest thing was getting a good seal on the lid - but 4 bricks on top made a big difference.
But stick with the mahogany if you want to be allowed to bring it into the house - or to impress your guests at lunch during the shoot on your estate ;)
Anything which requires long conventional cooking - so something like Flank Steak which is tasty but tough comes out more tasty and not at all tough. Stewing steak done in Sous Vide (SV) comes out tender but with no loss of flavour. You can make things like steak and kidney pie or stew in a much shorter time by using SV meat instead of cooking for several hours and again the flavour is much better.
Chicken thighs keep their flavour but are more like breast in consistency. Lamb is superb. Ham done sous vide is much nicer than the conventional boiling and oven cooking.
As well as improved flavour and consistency it is excellent for making meals quickly. The meat is SV cooked and frozen - when you want to defrost it for use it will defrost quickly in the SV water bath and as its already cooked final preparation is much quicker (its great advantage for Chefs in commercial kitchens).
Ideally there's something to circulate or stir the water as well, keeping it more even throughout than relying on convection. But plenty of DIY projects don't bother. (And for short cooking times, just a well insulated container and no heating can be good enough.)
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