2 oz Light Rum
1 oz Brandy
1 1/2 oz Orange Juice
1/2 oz Lemon Juice
3/4 oz Orgeat
Shake with a lot of crushed ice and then pour unstrained into a large glass.
A version of Trader Vic's classic Scorpion Bowl, a drink served in a large bowl for 2-4 guests to enjoy, rejiggered to an individual size. This was originally a blended drink, but I've found it still tastes great when made with crushed ice.
(If you want a large version, as seen in the picture, just double everything.)