The imperial pint amounts to approximately 0.15 Gallon or 568ml however, in the US there are two different kinds. First, there is the liquid or wet pint which equates to approximately 0.125 Gallon or 473ml, and then there is the dry pint which is not used as often and amounts to approximately 0.145 Gallon or 551ml.
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You have asked a good question--one that is not simply the 2 cups = 1 pint that most people think. The half-pints referred to in the recipe are dry measure, not the liquid measure that everyone thinks of in the kitchen.
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1 Pint [UK] = 2.40189 Cups. For other volume unit conversions, please go to Volume Conversion. Pints (fluid and dry) to cups conversion factors are listed below. To find out how many cups in pints, multiply by the right conversion factor or simply use the converter below. 1 Pint [Fluid,US] = 2 Cups. Pint is a volume unit in US customary and imperial measurement systems. Similar to other common volume units, in customary system, there are fluid and dry (rarely used) pints and in imperial system there is only one type of pint.
http://www.asknumbers.com/pint-to-cup.aspx
A pint is normally equal to 16 ounces. Blueberries, normally sold in 1/2 pints would be 8 ounces each, so 2 would make 16 ounces. One cup equals 8 ounces...two cups equals 16. Yes, its fine to use frozen...BUT...let them thaw first in a strainer placed over a bowl.
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In the United States, a pint is 16 US fluid ounces (473 mL). However, the typical conical pint glass holds 16 oz. to its rim. With a half inch of foam, the actual liquid fill is roughly 14 oz.
https://en.wikipedia.org/wiki/Pint_glass
The dry pint was derived from the British corn gallon (268.8 cubic inches). In 1842, the British decided to abandon all gallons that were used up to that point, and came up with a new imperial gallon which amounts to 277.42 inches. A UK pint today is derived from this gallon.
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2 cups= 1 pint, 4 cups = 2 pints, and 2 pints= 1 quart Therefore, 2 half pints=2 cups. Frozen blueberries would be okay to use-but you have to thaw them out first.
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Conical pint glass. A pint glass is a form of drinkware made to hold either a British (imperial) pint of 20 imperial fluid ounces (568 ml) or an American pint of 16 US fluid ounces (473 ml). These glasses are typically used to serve beer, and also often for cider. The common shapes of pint glass are: 1  Conical (or sleevers) glasses are shaped, as the name suggests, as an inverted truncated cone around 6 inches (15 cm) tall and tapering by about 1 inch (25 mm) in diameter over its height.
https://en.wikipedia.org/wiki/Pint_glass
There is 2 cups in one pint...but they ask for 2 half pints so it totals one pint... THE ANSWER: 2 cups I don't see why you wouldn't be able to use frozen...unless there is added sugar or something...
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Don’t get confused with the imperial pint because this is used as a unit of measurement for draught beer and cider, as well as refillable milk bottles. Throughout history, a pint was used outside the Commonwealth as well, although its volume varied anywhere between half to over one liter. So there you have it!
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how much in pint
British imperial pint of 20 imperial fluid ounces 68 ml or an American pint of 16 US fluid ounces 473 ml. British imperial pint of 20 imperial fluid ounces 568 ml or an American pint of 16 US fluid ounces 473 ml.