✔ 最佳答案
根據酒吧量酒器具規格,1 peg 酒應該是 25ml ;double 是 50ml 。
『 This steel double jigger holds a correct 25ml or double 50ml measure to the line, avoiding spillage. 』
http://www.barstuffdirect.co.uk/djigger.htm
『 Pub measure. For accurate dispensing of spirits. Available in neon pink, yellow, purple or black with a black bracket suitable for shelf or wall mounting. Great for the home bar revivalists. 25ml measure. 』
http://www.barstuffdirect.co.uk/pubmeasure.htm