The phrase before this sentence is equivalent to a question, that is, do you want a 10-ounce can of Rotel? Oz means ounce here, and ounce is the British unit of weight. One sixteenth pound, one ounce is about twice as much as our market system, which is about 28.3495 grams. Can stands for "canned food" in American English. Rotel is the name of this dish, which contains tomatoes and green peppers, and seasoning liquid for later use. I hope it can help you solve the problem.