In the early '70's, we took our 2 little girls and stayed in thatched hut looking room in Runaway Bay. One VERY hot day, we toured a plantation on an open flatbed, and on the way home, stopped in Montego Bay for a quick lunch. The waiter noted our flushed faces, and in the local lilt, offered us a SKA. It looked like a tall cool glass of lemonade, and was so smooth and delicious, we asked for a refill. He laughed and said -No more until you eat at the buffet ! We realized WHY, when we stood - but did enjoy another later. Have been drinking them ever since, with happy memories ! (The girls drinks were without the rum). For a party, making 10 - 8 ounce drinks (or 18 - 6 ounce drinks), multiply everything by 8.