Report Abuse. Very very little. 1 teaspoon will substitute for a 1/2 to 1 cup chopped onion. But really there is no substitute for chopped fresh onion. The fresh onion will add a sweetness to the dish and season it without any bitterness or off flavor.JEN Â· 7 years ago. teaspoon will substitute for a 1/2 to 1 cup chopped onion. But really there is no substitute for chopped fresh onion. The fresh onion will add a sweetness to the dish and season it without any bitterness or off flavor. JEN Â· 7 years ago.
Officially, a US Cup is 240ml (or 8.45 imperial fluid ounces.) This is slightly different from an Australian, Canadian and South African Cup which is 250ml.
The cup is a United States unit of volume, most commonly associated with cooking and serving sizes. It is traditionally equal to half a liquid pint in US customary units but is now separately defined in terms of the metric system at values between 1 â 5 and 1 â 4 of a liter.