Panna Cotta Gelato

Short and elastic on the spoon, rich without turning waxy, sweet cream first and then a slow vanilla that keeps going after the cold has faded.

A dessert gel and a churned mix want opposite things from the same powder. Set for a plate, panna cotta takes 10 to 16 g of gelatine per litre of cream and holds its shape when turned out. Put that into a miscela that has to be churned and extruded at minus 8 C and the network forms too early: the mix goes elastic, the dasher slips and overrun collapses. At 4 g per kilo the gelatine works as a protein stabiliser instead, holding free water and giving the short body the dessert is known for, which is also why carob seed flour drops to 2 g. What reaches the tongue is 205 g of cream and one vanilla bean, sweet and unhurried.

Gelatine is fixed at 4 g. A classic panna cotta uses 10 to 16 g per litre of cream, but that dose is designed for a gel that will be turned out of a mould. In a mix that has to be churned and extruded at around minus 8 C, a firm gel is a defect: the network sets before churning, the mix goes elastic, the paddle slips and the overrun collapses. At 4 g the gelatine behaves as a protein stabiliser instead, holding free water and giving the short elastic body that reads as panna cotta, without seizing the machine.

That decision has a knock-on effect you can see in the list. Carob seed flour is at 2 g here, half the 4 g the other milk bases in this batch carry, because gelatine plus carob at full dose would over-hydrocolloid the mix. The vanilla bean at 4 g is the real weight of one pod per kilo, scraped and infused. Everything else is straight balance, and the only unusual constraint is a floor under the cream, because panna cotta without cream fat is just cold milk with gelatine in it.

Ingredients

Makes 1000 g of finished base.

Method

Gelatine dissolved at 55 C, gel broken with a blender before tray freezing

1. 1Whisk every dry ingredient together first: sugars, milk powder, stabiliser and salt. Dry-blending them stops the stabiliser clumping when it meets liquid.
2. 2Warm the liquids to 40 C (104 F), then rain the dry mix in while whisking hard.
3. 3Heat to 82 C (180 F) and hold for 2 minutes so the stabiliser hydrates.
4. 4Chill in an ice bath to under 5 C (41 F) within 2 hours. Slow cooling is where bacteria and coarse crystals both start.
5. 5Age 6 to 12 hours in the fridge under 5 C (41 F). This is when the stabiliser and the milk protein take up water.
6. 6Freeze in a shallow metal pan 2 to 3 cm deep, breaking the crystals with a fork every 30 to 40 minutes, 4 to 6 times.
7. 7Freeze firm, then temper 10 to 15 minutes in the fridge before scooping.

The balance

All six against the professional range for Milk Gelato.

Fat at 9.22 percent against 5 to 12 is the first anchor, and it is what puts a floor under the cream at 205 g rather than letting the solver trade it for milk powder. MSNF at 10.01 percent against 8 to 12 is the second, and it explains the 40 g of skim milk powder sitting alongside 565 g of whole milk: the cream carries fat, not solids-not-fat, so the powder has to. Around them, solids read 37.79 against 34 to 42, sugars 17.83 against 14 to 22, POD 180.41 against 135 to 200, PAC 253.64 against 220 to 300, water 62.21 against 58 to 66 and protein 4.07 against 3 to 5. PAC 253.64 is the lowest of the three dairy sheets in this batch, which suits a dessert meant to be eaten firm and cold rather than soft. Lactose comes to 5.46 percent of the mix and 8.77 percent of the water, and the sandiness check passes.

If it goes wrong

Allergens: milk

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