Richard Seale oversees distilling operations and has a reputation for maverick embracing of technological advances in distilling amongst his peers.
Despite being sat in the middle of a sugar cane plantation , Four Square are forced to import most of their molasses from Guyana. (The sugar cane plantation was separated from the old sugar factory, now the distillery in 1950s with production at the factory ceasing in 1987-89.)
Surprisingly, given the number of different brands of rum produced at Four Square, there is only one type of fermentation using a distiller’s yeast imported from South Africa. The two-step fermentation process is computer temperature controlled and progressed very slowly with the molasses gradually added during the second step over a period lasting twenty hours.
The rums produced at Four Square are all a blend of pot and column stills. The copper pot still is topped by a small column which in turn feeds two retort chambers and two sets of coolers with the spirit emerging at just 10°C. Additional coolers in the retorts ensure reflux in all three steps of this unconventional setup. Richard had still parts fabricated in Scotland, Italy and Barbados.
The Italian built three-column continuous still can also run as a two-column. Given Richard’s love of technological advances, this column predictably operates under a vacuum so is able to run at lower temperatures. The first column has two sections with a stainless-steel bottom and copper top. The other two columns have stainless-steel shells with copper trays. The Geeks amongst you may be interested to know that the rectifying column only has forty trays and produces a distillate at between 94-95% alc./vol.. (More neural distillers commonly use 75 trays to achieve 96% alc./vol..)
At Four Square they blend before and after aging with all casks filled with various blends of the pot and column stills. As is the norm, American oak ex-whiskey casks form the majority of the casks but Richard has also experimented with Sherry, Madeira, Port, Zinfandel casks. Casks are filled at 65-68% alc./vol. to give greater wood extraction. (Not many rum producers filling below 70% alc./vol. with many approaching 80% alc./vol.). The character of Four Square rums comes from the distillation and cask ageing, with absolutely no favouring additives ever used. All rums made at Four Square are aged a minimum of two years.