Wasabi ice cream with white chocolate

Sweet white chocolate with a short, clean burn in the nose behind it. The boldest recipe in the set — and surprisingly easy to eat.

Wasabi heat is nothing like chilli heat. It is carried by allyl isothiocyanate, a volatile compound that rises into the nose, lasts a few seconds and is gone — it does not linger in the mouth or burn the tongue. That is precisely why it works in ice cream: white chocolate gives a sweet, milky bed and the wasabi cuts through it for a moment. The key point is that wasabi must never be heated. The powder is mixed with water, left ten minutes to develop, and added only to a fully cold mix.

Type: Classic cream ice cream · Servings: 8 · Difficulty: Moderate

Equipment

Ingredients

  • 480 g whole milk 3.5 %
  • 220 g whipping cream 33 %
  • 20 g skimmed milk powder
  • 150 g white chocolate
  • 50 g granulated sugar (sucrose)
  • 30 g dextrose (glucose powder)
  • 12 g wasabi powder (powder, not tube paste)
  • 20 g lime juice (fresh)

Making the mix

  1. Pour the milk, cream and milk powder into a pan and heat while stirring. At about 40 °C add the granulated sugar and dextrose and stir until dissolved.
  2. Heat the mix to 85 °C and hold it there for 1–2 minutes, stirring constantly.
  3. Take the pan off the heat, drop in the broken white chocolate and leave it for a minute. Then stir and blend briefly with a stick blender until smooth. White chocolate seizes easily when overheated, which is why it goes in off the heat.
  4. Cool the mix below 5 °C in iced water. Rest it in the fridge for at least 3 hours.
  5. Just before churning, stir the wasabi powder into two tablespoons of the cold mix to make a thick slurry and let it stand for 10 minutes. Only then does the pungency develop — the enzyme needs water and time.
  6. Stir the slurry back into the cold mix, add the lime juice and fold it in. Do not reheat the mix.

Method — Compressor ice cream maker

  1. Switch the ice cream maker on 5–10 minutes in advance so the bowl can pre-chill.
  2. Give the aged mix a quick blitz with a stick blender and pour it into the bowl, no higher than the fill line. Churn for 30–40 minutes, until it thickens and clings to the paddle.
  3. Transfer to a chilled tub, press cling film onto the surface and leave to harden in the freezer for 2 hours.

Total time: 7 h 1 min

Method — Freezer-bowl ice cream maker

  1. Take the bowl, frozen for at least 24 hours, out of the freezer just before use, fit the paddle and switch the machine on.
  2. With the machine running, pour in the well-chilled, freshly blended mix — filling the bowl no more than two-thirds.
  3. Churn for 20–30 minutes, until the mix thickens to a soft cream. There is no point going longer — by then the bowl has warmed up.
  4. Transfer to a chilled tub, cover with cling film and leave to harden in the freezer for 3 hours.

A freezer bowl only partly freezes the mix, so the ice cream takes longer to harden and tends to be slightly less smooth than from a compressor machine. A thoroughly chilled, properly aged mix helps.

Total time: 7 h 51 min

Method — Ninja CREAMi and similar machines

  1. Pour the chilled mix into a CREAMi tub up to the MAX line, put the lid on and freeze it level for 24 hours.
  2. Put the tub in the machine and run the Ice Cream program.
  3. If the result is crumbly, add a tablespoon of milk and run Re-spin.

Programme: Ice Cream

With a CREAMi the mix sits in the freezer for 24 hours, which is a long time for wasabi pungency. So add the wasabi after the program: make a hole in the ice cream, add the slurry and run Mix-In.

Total time: 28 h 31 min

Stages

Preparation
22 min
Cooking
14 min
Cooling
30 min
Ageing in the fridge
3 h 20 min
Churning
35 min
Hardening in the freezer
2 h
Total time
7 h 1 min

Plan: what to do and when

The whole recipe takes 7 h 1 min, of which 36 min is hands-on — the rest is waiting you can spend elsewhere.

The making itself fits into a single day — start at least 7 h 1 min before serving.

  • Prepare the mix (weigh and stir the ingredients) — 22 min
  • Cook the mix — 14 min
  • Cool the mix down — 30 min
  • Let the mix age in the fridge — 3 h 20 min
  • Churn in the machine — 35 min
  • Let it harden in the freezer — 2 h

Serving and storage

Serve in small scoops — this is a two- or three-spoon flavour, not a bowlful. It is excellent with strawberries, sliced pear, or beside a square of dark chocolate. Let it stand for 5–10 minutes out of the freezer (−18 °C) until it scoops easily.

Eat it within three days. Wasabi pungency is volatile and fades week by week in the freezer, until only the white chocolate is left.

Tips

  • Most "wasabi" powders are a blend of horseradish, mustard and colouring — true wasabi (Eutrema japonicum) is rare and expensive. For this recipe the powder is perfectly fine: the flavour is clean and the dosing predictable.
  • Do not use tube paste. It contains oil, sorbitol and thickeners that shift the composition of the mix, differently with every brand.
  • Start with 8 g of powder if you are unsure. You can add more before churning; you cannot take it out.

Why it works

White chocolate is the main source of both sugar and fat here: 150 g bring 74 g of sugar and 48 g of fat, so only 50 g of added granulated sugar is needed. Overall the mix lands at 14.1 % fat, 10.1 % milk solids non-fat and a PAC of 23.4 — comfortably within the cream ice cream ranges. Wasabi powder is mostly starch and fibre, so it barely touches the composition; twelve grams change the flavour, not the numbers. The pungency only appears on contact with water: the enzyme myrosinase breaks glucosinolates down into allyl isothiocyanate. The reaction takes about ten minutes and its product is volatile, hence the rule — as late as possible, as cold as possible, and eat it soon.

Related recipes

  • Ginger and lime sherbet

    Sharp, fresh and only lightly dairy. The ginger warms, the lime cuts — an ideal palate cleanser or the end of a heavy meal.

  • Black sesame ice cream

    An ash-grey ice cream with a deep roasted flavour, closer to tahini than to a nut butter. A standard flavour in Japan, a surprise here.

  • Chocolate gelato with chilli and cinnamon

    A dark chocolate gelato with a quiet warmth at the finish. The heat arrives after the cold, not before it.

How we calculate the composition · What PAC and POD mean · Balance this mix in the calculator

Sources