Rum Raisin Gelato — Italian Malaga-Style Classic Recipe

Rum raisin — gelato al Malaga in Italy — is a deceptively technical flavor. Soak the raisins wrong and they freeze into hard pebbles; add too much rum and the mix never sets. This recipe gets the maceration, the alcohol, and the balance right.

Plump, dark raisins suspended in a pale cream base — the hallmark of gelato al Malaga.

The Two Problems This Recipe Solves

Quick reference. Macerate raisins in dark rum so they stay soft when frozen, and count the rum's alcohol toward your PAC so the mix still sets at −12 °C. Everything else is a clean white base.

Figure 1 — The production sequence. Raisins are macerated separately and folded in after churning.

Rum raisin looks simple but hides two traps. The first is texture: dried raisins are mostly sugar and very little free water, so dropped straight into a mix they turn into icy nuggets. The fix is maceration — soaking them in rum draws liquid in, plumps them, and keeps their internal water from freezing solid.

The second trap is the alcohol itself. Ethanol is a powerful anti-freeze. In gelato balancing it carries an extremely high PAC (anti-freezing power), so even a modest splash of 40% rum can push a mix below its setting point, leaving you with a thick, soupy gelato that never firms up. The rule of thumb across artisanal practice is to keep total pure alcohol at roughly 1–3% of the finished mix and to count it in your balance (Corvitto, Los Secretos del Helado).

The Base

Build this on a clean white or light custard base — the same logic as a fior di latte or a gentle crema. The dairy and sugars do the structural work; the rum and raisins are flavor and inclusion.

That base lands a balanced mix near 36–38% total solids, 8–9% fat, and a PAC in the scooping band once the rum is counted. Re-run your own numbers — milk and cream fat vary by supplier.

Macerate the day before: the raisins need hours to fully plump.

Macerating the Raisins

Use good dark raisins (Malaga-style or large Thompson). Rinse, then cover with dark rum — about 80–100 g of rum per 120 g of raisins — and let them sit, covered, at room temperature for 8–24 hours. They will swell and soften as they take up the rum. Drain before use and reserve the rum: that liquid is now sweet, raisin-scented, and part of your flavor. Stir a spoonful back into the base if you want a stronger rum note, but adjust your alcohol budget accordingly.

Do not skip maceration to save time. Unmacerated raisins not only freeze hard, they also pull moisture out of the surrounding gelato, creating dry, dense pockets around each one.

Method

1. Macerate the raisins in rum 8–24 hours ahead (above).
2. Combine milk, cream, and the powders. Whisk sucrose, dextrose, skim milk powder, and stabilizer together dry first so they disperse without lumps.
3. Pasteurize to 85 °C (or hold per your standard low-temp profile), whisking. If using yolk, this is your custard step.
4. Cool quickly to 4 °C — a blast chiller is ideal — then add the 25 g of base rum.
5. Age the mix 6–12 hours at 4 °C. This maturation hydrates proteins and stabilizer and rounds the texture.
6. Churn in the batch freezer until it reaches roughly −7 to −8 °C and a firm, scoopable body.
7. Fold in the drained raisins by hand or in the last seconds of churning — like stracciatella, inclusions go in late so they stay whole and evenly spread.
8. Blast freeze and hold at −14 to −18 °C; serve at around −12 °C.

Fold raisins in after churning so the paddle never shreds them.

Balancing the Alcohol

Alcohol is the one variable beginners underestimate. Counting both the base rum and the residue clinging to drained raisins, aim to keep pure ethanol around 1–3% of the finished gelato. Push past that and the symptoms are unmistakable: the mix stays slack in the freezer, the gelato weeps at the case, and it will not hold a clean quenelle. If your batch comes out too soft, cut the base rum next time rather than the raisins; if it freezes too hard, you over-trimmed and should restore a little dextrose. For a deeper treatment of spirits in frozen desserts, see the alcoholic gelato guide.

Serve at about −12 °C for a clean, soft scoop.

Related Concepts

• Alcoholic Gelato Guide
• PAC — Anti-Freezing Power
• How to Balance a Gelato Recipe
• Fior di Latte
• Stracciatella Recipe
• Maturation
• Why Is My Gelato Too Hard