Rum and spiced rum start as the same drink: spiced rum is simply rum that has had spices steeped in it, so the base spirit is unchanged and everything you taste on top of it has been added afterwards. The spicing does not make the rum stronger, older or smoother, it makes it more aromatic, and in most shop-bought versions it also makes it sweeter. That last part is the difference people notice most, and it is the one you get to control when you spice a bottle yourself.
It is a useful distinction to understand before you buy either, because "spiced" is doing a lot of work on a label. Here is what is actually going on in the bottle.
What is rum before anything is added to it?
Rum is a spirit distilled from sugarcane, usually from molasses, occasionally from fresh cane juice. Beyond that it is one of the least regulated categories in the drinks cabinet, which is why rum covers such an enormous range of flavours: light and grassy, heavy and funky, dry, sweet, barely coloured or nearly black.
Most of the differences come from two places. The first is what happens during distillation and fermentation, which is where the heavy, fruity, almost overripe character of some Caribbean rums originates. The second is time in a barrel. Ageing in oak softens the spirit and pulls colour and vanilla-ish flavours out of the wood, which is why an aged rum tastes rounder than a young one. Colour, incidentally, is not a reliable guide to any of this, since caramel colouring is common and perfectly legal.
What matters for our purposes is that a plain dark rum already brings molasses depth, a bit of sweetness on the nose, and enough body to carry other flavours. It is an unusually good canvas.
So what does spicing actually change?
Spicing changes aroma and flavour, and nothing else. The alcohol strength stays whatever the base rum was, since steeping spices in a spirit does not dilute or concentrate it. The age stays whatever it was. What you are doing is extracting aromatic compounds from spices into the alcohol, which is a very efficient solvent for exactly that kind of thing.
The spices that turn up in spiced rums around the world are the warm baking-cupboard ones: vanilla, cinnamon, clove, nutmeg, allspice, star anise, ginger and citrus peel are all common. Different combinations pull the rum in quite different directions. Heavy on vanilla and cinnamon and you get something soft and dessert-like. Lead with ginger and the whole drink turns brighter and sharper, better with lime and soda than with cola.
There is one more thing worth knowing. Many commercial spiced rums are sweetened as well as spiced, and sugar is doing a good deal of the work people attribute to the spices. It rounds off harsh edges and makes a cheap base spirit taste more expensive than it is. Nothing wrong with that, but it explains why some spiced rums taste more like a liqueur than a rum.
What happens when you spice a rum yourself?
You get to make every one of those decisions. That is genuinely the appeal, and it is also why homemade spiced rum tastes different from the shop version even when the spices are similar: you decide how far the extraction goes, and you decide whether anything sweet joins the party.
With our Spiced Rum Making Kit the process runs to about 72 hours of infusing. Clean the jar with warm water, add a spice sachet and a 700ml bottle of dark rum, and leave it somewhere cool and dark. You taste it through those three days with the pipette provided, which is the part that turns this from a recipe into a skill. Extraction is not linear, and the difference between day one and day three is dramatic. When it tastes right to you, that is when it is done.
Then it is filtered twice. The first pass through the cotton filter takes out the spices. After two or three days of settling, the fine sediment drops to the bottom and a second pass through the cleaned filter gives you a noticeably clearer, cleaner bottle. Skip the settling and you get a cloudy rum, which tastes fine but looks like you were in a hurry.
The kit makes two 700ml batches in two flavours: a Captain's blend, which is the classic pirate spice profile, and a Jamaican ginger with a real zing to it. Running both is the fastest way to understand what spicing changes, because you are tasting the same base rum taken in two directions.
Which rum should you start with?
An inexpensive dark rum that is not already spiced. This trips people up, so it is worth saying plainly: buying a spiced rum to spice again gives you a muddled, over-perfumed result, because you are layering someone else's blend under your own.
There is no need to spend much either. The spicing is the kit's job, and the subtleties of an expensive sipping rum would largely disappear under the spices anyway. A plain, honest dark rum from the supermarket shelf is exactly right.
You are also in charge of the intensity throughout. Leave the spices in longer for a bolder, spicier rum, or filter earlier for something gentler. If a batch does come out fiercer than you wanted, top it up with a splash of plain rum to soften it back down. If it is not spicy enough, leave the spices in longer next time.
Once bottled, drink it within a year, kept sealed and out of direct sunlight. Worth noting for anyone catering to a mixed household: the kit is vegetarian, vegan, gluten free and lactose free, and like all our kits it contains no alcohol itself, only the spices, filter and equipment. It is hand-packed in Britain, and you supply the bottle.
Spiced rum FAQs
Is spiced rum stronger than normal rum?
No. Infusing spices into a spirit does not change its alcohol strength, so your finished spiced rum is the same strength as the dark rum you started with.
Can I use white rum instead of dark?
Our kit is designed around an inexpensive dark rum, which brings the molasses depth that carries the spices. A plain dark rum that has not already been spiced is the one to buy.
How long does homemade spiced rum take?
About 72 hours to infuse, then two to three days to settle and clear, so under a week per batch including the second filtering.
Why is my spiced rum cloudy?
It has not had its full settling time, or the sediment was disturbed when pouring. Give it the full two to three days, then filter again gently through the cleaned cotton filter.
Does spiced rum need to be sweetened?
Not at all. Many commercial bottles are sweetened, but a home infusion tastes of the spices themselves, which is drier and, to our taste, considerably more interesting.
Fancy spicing your own bottle this week? Take a look at our drink making kits.
