Your question lacks detail to properly awnser...
How big is the cow? are you making the whole freaking cow chuck or are you getting some steak and roasts out of the deal? Is this lean, extra lean, or have to wring it out to eat it?
In either case a 1200 pound cow should yeld approx 450 - 500 pounds of beef. ground or otherwise..
That really depends on what other cuts of meat you are getting from that quarter carcass, or if you're getting the whole quarter to be turned into only ground-beef and not just a few pounds. It also depends on the dressage percentage of that cow (or "cow") and how much meat we would expect to get off of her (or it).
First of all, let's do the math to estimate how much meat is obtained from this 1200 lb cow. The hot-carcass weight of a slaughtered cow is around 50%, which translates to around 600 lbs hanging/hot-carcass weight. From there, let's assume the dressage percentage is 50% of that, so 50% of 600 lbs is 300 lbs. That three hundred pounds of meat is divided into quarters, which would be around 75 lbs per quarter of meat.
If that quarter was made into ALL ground beef, that would be 75 lbs of ground beef. If, however, there were other cuts made and chosen from that quarter, then the ground-beef portion may range from 60 lbs to 1 lb.
56
3.75
250 grams = about 0.551 pounds.
Allow 8 ounces of uncooked beef per person.For 40 people that would mean you need 20 pounds of beef.
40-50 grams
698/186= 3.75lbs
6.98
Most recipes for these call for 1/4 to 1/3 cup of ground meat.
That is 908 gm.
There is .035 grams in an ounce. 400 grams is approximately one pound.
About 1.76 pounds.
I don't know how to convert to "beef roasts", but a good rule of thumb is half a pound of uncooked meat per person, so however many "beef roasts" are in 75 pounds.
There are:approx 24 calories in a half ounce of lean roast beefapprox 28 calories in a half ounce of boiled, chopped, beefapprox 30 calories in a half ounce of 85% lean, raw, ground beefapprox 36 calories in a half ounce of 80% lean, raw, ground beefapprox 42 calories in a half ounce of 75% lean, raw, ground beefapprox 47 calories in half ounce of 70% lean, raw, ground beef.