This isn't quite exact, but 1/4 cup of butter (so a half stick if you're in the US) is 57 grams according to the conversion chart from allrecipes below. So use just a slightly heavy 1/4 cup or 1/2 stick.
Yellowtail, including Yellowtail Jack (Seriol landei), are recognized by a yellow stripe across their body and their yellow tail. Range & Habitat: Yellowtail is caught year round, but more commonly during summer in the Pacific Coast and the Sea of Cortez. They are caught primarily with hook and line, and their average weight is 10 to 20 lbs.
Cottontails typically weigh two to four pounds and are fully grown by six months of age. The only mammal in Illinois that might be confused with the cottontail is the Swamp Rabbit (Sylvilagus aquaticus). In Illinois, the swamp rabbit is found only in the southern counties. Swamp rabbits are similar in appearance to the cottontail but are larger and have darker, reddish-brown fur.