Tremendous is best know for one of the few 24 hour restaurants in Mississauga. They offer all day dim sum too.
Quality of food is pretty good and fresh. Had the different dumplings like Har Gow, Beef gow, chicken feet (which were bigger than normal). All good. They do not have dim sum special prices though. We also ordered a plate of Cantonese Chow Mein. Generous portions of seafood and Char siew (roast pork) are part of this dish with the wonderful combination of crispy noodles entwined in the wet ones.
Their hot chilli oil is a good addition to any dish. The Chinese mustard is also nice to add to noodles or dim sum.
The only problem with this place is the miserable service of the waiters and waitresses. They are very poorly trained and almost look so angry when I you ask them for water or tea or just anything at all! They try to rush through their job when being asked to serve anything to the tables without so much as a tiny smile on their faces. It does make the customers rather uncomfortable seeing that they look unhappy getting things for you. Wish they would improve on this.