How much gelatine do I need per panna cotta?

For a standard panna cotta that holds its shape with a gentle wobble, use 2 platinum gelatine leaves per 250ml of liquid (so a 500ml batch needs 4 leaves — the same quantity Dr Oetker quotes to set a pint). For a softer set that barely holds, use 1.5 leaves per 250ml; for a firmer panna cotta that unmoulds cleanly, use 2.5 leaves per 250ml. Each serving is approximately 125ml, so a standard 500ml batch makes 4 panna cottas.

How do I convert between gelatine leaves and powder?

You need MORE grams of powder than the raw weight of the leaves, because powdered gelatine has a lower bloom (gelling) strength than platinum leaf. Dr Oetker states that 4 of its platinum leaves (1.7g each, 250 bloom) are equivalent to approximately 12g of powdered gelatine — about 3g of powder per leaf, not 1.7g. Simply matching the leaf weight (4 leaves = 6.8g) would under-dose the powder by roughly 40% and the panna cotta may not hold its shape. Leaves themselves come in grades (bronze, silver, gold, platinum, titanium) with different weights and bloom strengths, but they are interchangeable by count — you use the same number of sheets whatever the grade.

Why did my panna cotta not set?

The most common reasons are: not enough gelatine, boiling the liquid after adding gelatine (which destroys its setting power), or using fresh pineapple, kiwi, papaya, or figs which contain enzymes that break down gelatine. Always dissolve gelatine in warm (not boiling) liquid, and if using those fruits, cook them first to deactivate the enzymes. Panna cotta also needs at least 4 hours in the fridge to set fully.

Can I make panna cotta without cream?

Traditional panna cotta uses a mix of double cream and milk (typically 2:1). You can substitute with all milk for a lighter result, coconut cream for a dairy-free version, or buttermilk for a tangy flavour. If using a lower-fat liquid, you may want slightly more gelatine as fat helps the set feel smoother. Coconut milk panna cotta works particularly well.

How do I unmould panna cotta cleanly?

Use a slightly firmer set if you plan to unmould. Lightly oil the moulds before filling, or briefly dip the base of each mould in hot water for 5-10 seconds, then invert onto a plate. You can also run a thin knife around the edge first. If you are serving in glasses, a softer set with a gentle wobble is more elegant and does not need unmoulding.

BakeCalcs

Panna Cotta Gelatine Calculator

Calculate gelatine leaf or powder needed for panna cotta based on liquid volume.

Total Liquid Volume

Combined cream and milk volume

Gelatine TypeLeaves are dosed by count; powder is scaled up (~3g per leaf) for its lower bloom strength

FirmnessSoft ~6 leaves/litre, standard ~8/litre, firm ~10/litre (platinum leaf)

How We Calculate This

This calculator uses the standard panna cotta ratio of 2 platinum gelatine leaves per 250ml of liquid as the baseline (so a 500ml batch needs 4 leaves — the same quantity Dr Oetker quotes to set a pint). The firmness setting adjusts this: soft uses 1.5 leaves per 250ml for a barely-set wobble, and firm uses 2.5 for an unmould-friendly consistency.

If you choose powdered gelatine, the result is scaled up from the leaf count because powder has a lower bloom strength: Dr Oetker states 4 platinum leaves ≈ 12g of powder, so roughly 3g of powder replaces each leaf (not 1.7g). Matching the leaf weight gram for gram would under-dose the set.

The recipe breakdown assumes a classic panna cotta ratio of two-thirds double cream to one-third whole milk, with 60g of caster sugar per 500ml of total liquid. Milk is derived by subtracting the cream from the entered volume so the two always sum exactly. Servings are calculated at approximately 125ml each.

Frequently Asked Questions

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Last updated: February 2026

All calculations are based on standard ratios and conversions. Results may vary with specific ingredients, equipment, and conditions.