Lavender Honey Cacao Oats: Getting the Ingredients Right
Two ingredients in this recipe are routinely bought wrong. Most lavender sold for cooking is the wrong species, and most honey gets added at a temperature that undoes the reason for buying good honey in the first place.
The oats are the easy part. Start there.
Which oat cut to use
Overnight oats depend on the oat absorbing liquid cold, over hours, without heat. Not every cut does that well.
Rolled oats — steamed and pressed flat — are the right choice. The flattening gives a large surface area and a broken structure that takes up cold liquid readily. They soften fully overnight and keep some chew.
Steel-cut oats are the whole groat chopped into pieces, never flattened. They are dense and they do not fully hydrate cold. Left overnight they stay firm and faintly raw. You can use them if you actively want that texture, but give them a full 24 hours.
Instant oats are rolled thinner and pre-cooked. They hydrate almost immediately and turn to paste by morning.
Ratio: 1 part oats to 1.5 parts liquid by volume. About 50 g of rolled oats to 150 ml of liquid makes a single serving. Cacao absorbs a little liquid of its own, so if you are adding 12 g of cacao, push toward 165 ml.
The soluble fibre in oats is largely beta-glucan, and it is what thickens the mixture as it sits. It keeps thickening for a day or two, which is why a batch made on Sunday is noticeably stiffer by Tuesday. Add a splash of milk when you serve it.
Culinary lavender is a specific plant
This is the distinction worth knowing, because getting it wrong produces a dish that tastes of soap and nobody can work out why.
Culinary lavender is Lavandula angustifolia, English lavender. It is comparatively low in camphor and reads as floral, sweet, and slightly herbal.
Most lavender grown commercially — the vast fields in the photographs, the stuff in most sachets and essential oils — is lavandin, Lavandula × intermedia. It is a hybrid, it yields far more oil, and it is substantially higher in camphor and cineole. Camphor is what your palate reads as medicinal and soapy. Lavandin is excellent for cleaning products and wrong for food.
So buy lavender labelled angustifolia, or labelled culinary, from somewhere that sells food. Lavender from a craft shop or a garden centre is likely lavandin and may also have been treated with things you do not want to eat.
Quantity: about 1 g of dried buds per serving, which is roughly half a teaspoon. Lavender scales badly — double it and it stops being floral and starts being perfume. Steep it in the warm liquid for five minutes and strain it out. Leaving buds in overnight over-extracts them and adds a woody bitterness.
Honey above 40°C is just sugar syrup
Raw honey carries enzymes, trace aromatic compounds, and pollen. Those are what you are paying the premium for over a supermarket squeeze bottle.
They are also heat-sensitive. Sustained warming degrades the enzymes and drives off the volatile aromatics that give a varietal honey its character, and prolonged heat encourages the formation of hydroxymethylfurfural, which is the standard laboratory marker for honey that has been heated or stored badly.
The practical rule is simple: do not add good honey to anything above about 40°C. In this recipe that means the honey goes in at the end, after the cacao mixture has cooled, not into the hot liquid with the lavender. If you want honey in the warm phase, use a cheap one and save the good jar for the finish.
Honey also crystallises, and crystallisation is not spoilage — it is glucose coming out of solution, and it happens faster in honeys with a higher glucose-to-fructose ratio. Clover and rapeseed set hard quickly. Acacia stays liquid for a long time. If yours has set, stand the jar in warm water rather than microwaving it.
For flavour here, a light floral honey — acacia, orange blossom, wildflower — sits with the lavender. A dark honey like buckwheat or chestnut will bulldoze it completely.
The build
- Warm 60 ml of milk to about 70°C. Whisk in 12 g of ground cacao until smooth. Cacao will not disperse cold, so this step is not optional.
- Add 1 g of dried culinary lavender. Steep five minutes, then strain the buds out.
- Add a pinch of salt.
- Pour in 105 ml of cold milk. This brings the mixture down out of the range that would harm the honey.
- Stir in 50 g of rolled oats.
- Refrigerate overnight.
- In the morning, stir in a teaspoon of good honey and loosen with a splash of milk.
Toasted almonds or pistachios on top are worth the thirty seconds. The oats go uniformly soft overnight and the dish wants something with a snap in it.
If it goes wrong
Soapy or medicinal. Lavandin rather than angustifolia, or too much of either, or the buds were left in overnight.
Gluey. Instant oats, or too little liquid. Rolled oats and 1:1.5.
Gritty. The cacao went in cold.
Firm and raw-tasting. Steel-cut oats. Give them another day or switch cuts.
The pure ground cacao is the right base here because it disperses easily into a small amount of warm milk and leaves you controlling the floral note entirely. If you would rather have the flowers already handled, the Rose Vanilla blend covers similar ground and needs no steeping at all.
