They can't prepare meat and everything else in the same sink, this would deem the meat not-kosher.
But the truth is that there are NOT two sinks in every Jewish home. Not every Jewish home keeps kosher, plus it is possible to keep kosher with one sink...you would just have to use removable wash basins inside the sink.
Under traditional Jewish Law, dishes that are for meat cannot touch dishes for dairy. Only some Jews use 2 dishwashers. Others clean the dishwasher in between washing meat plates and dairy plates.
In Judaism, dairy and meat are kept completely separate. Those who can afford it may have two kitchens, one for dairy food preparation and one for the preparation of foods containing meat.
Not everyone has two kitchens, some have two fridges and two ovens. Some just have two sets of everything (dishes, pots and pans, etc) but only one oven and fridge.
Most do not. I'm an Orthodox rabbi and have never seen a sink in a Jewish dining room.
Those who do, the extra sink will usually be in its own little alcove adjacent to the dining room or the restroom. It is for the purpose of washing the hands before eating and/or after leaving the restroom, depending on the number of sinks in the home, which ones are located where, etc.
I'm a kitchen and bath designer designing a Rabbi's home currently, with a sink off the dining/living room. He told me it is to avoid cross-contamination.
Most do not have two. I've been in lots of Jewish houses, Orthodox, Reform, Conservative, and Hassidic, Ashkenazic and Sephardic, rabbis and laity, wealthy and poor. I've never been in one that had two kitchens. But ...
The Jewish laws that require separating Passover cooking from every day cooking would be much easier to keep if you could just close off your every-day kitchen during Passover, and close it off outside of Passover. And it might be handy to have a separate dairy kitchen distinct from your meat kitchen in order to simplify keeping meat and dairy foods entirely separate. That ends up arguing for 3 or 4 kitchens, but the few genuinely wealthy Jews I've known always seemed to have something better to spend their money on than extra kitchens.
Yes, Home Depot does carry Blanco sinks. There are many online results for these sinks, and in the store you can have an employee help you locate them.
Kosher regulations do not permit mixing milk dishes with meat dishes. This is why kosher kitchens have 2 sets of silverware, dishes etc., to keep from mixing. Two sinks is not strictly required but is usually the case in religious Jewish homes.
Copper Vessel sinks can be found at home renovation stores such as Lowes or Home Depot. Vessel sinks are very large bathroom sinks. They are also available in stainless steel or ceramic. A plumber would be able to install it.
Most sinks that I've seen in mobiles are 32 x 20.
Franke sinks can be brought from Home Depot. They offer great deals on this product, and their customer service staff are very helpful.
One can purchase corner sinks at local home renovation stores like Home Depot and Lowe's. Online retailers like Amazon also offer corner sinks at a very reasonable price.
Bar sinks are quite easy to find. Most home improvement stores like Lowes and Home Depot will have options for bar sinks and there are many online retailers who also offer bar sinks.
The Jewish Home was created in 2008.
Copper bar sinks can be found for a low price at many home improvement or bar specialty stores. Lowe's, The Home Depot, and Copper Sinks Online all have an inexpensive selection of bar sinks.
Your hardware store will sell a variety of kitchen sinks. Home Depot is a major hardware store that sells kitchen sinks. Lowes is also another store that sells kitchen sinks.
Kohler is one of the top rated brands when it comes to sinks, cast iron or otherwise. They are available at Lowe's, Home Depot, and Berry Home Centers.
Yes, franke sinks are unparalleled in shine and luster. They also spruce up any home in class and style.