Cassia — flavouring profile

The bolder, sweeter, more astringent of the two cinnamons, and the one in most savoury spice blends: it wants a wine with its own warm sweet-baking-spice register, not a fight with its tannic edge.

The compounds that matter. Cinnamaldehyde is the engine, and it makes up far more of cassia bark oil than it does of delicate Ceylon cinnamon, which is why cassia reads as hotter, woodier and more forceful. It is a warm sweet-woody aroma that meets the vanillin and clove-like notes of barrel-aged wine on the same register, a true mirror. Coumarin is the second marker, the hay-sweet, almost tonka note that sits higher in cassia than in any other cinnamon and gives it its coarse sweetness. A small amount of eugenol adds a clove edge. The catch is texture rather than aroma: cassia carries a dry, astringent grip of its own, so a hard, green-tannic wine stacks astringency on astringency and turns the finish drying.

What it demands of a wine. A wine that already carries warm sweet spice from oak ageing, so cinnamaldehyde and eugenol meet a counterpart rather than standing alone. Ripe, rounded fruit to cushion the sweetness and the bite; supple, resolved tannin rather than a young aggressive grip; enough body to carry a spice that lives in braises, tagines and mulled drinks; alcohol kept in check, since cassia turns up most where there is also chilli warmth.

Seek. Barrel-aged reds whose oak gives vanillin and clove-like sweet spice. Traditional Rioja, with its American-oak vanilla, coconut and gentle sweet spice, mirrors the warm register and brings soft red fruit and resolved tannin to absorb cassia's grip. A southern Rhone Grenache blend brings ripe strawberry-and-plum fruit, garrigue and a peppery lift over medium oak, matching the savoury five-spice and tagine end without hard tannin. For the sweet side of cassia, where it scents mulled wine, poached fruit and dark spiced cakes, a Tawny Port carries fig, caramel and walnut depth and the sweetness those dishes need. An aromatic off-dry white that itself smells of warm baking spice can carry lighter, fruit-led cassia dishes.

Avoid. Young, hard-tannic reds, which stack their grip on cassia's astringency for a drying, bitter finish. Lean, high-acid unoaked whites, which have no sweet-spice counterpart and read sharp and thin against the warmth. Big, high-alcohol reds where cassia rides alongside chilli, since the heat and the alcohol compound each other.

Three to reach for. A traditional Rioja Reserva for the warm five-spice and braised end; a southern Rhone Grenache blend for tagines and savoury-sweet meat; a Tawny Port for mulled, poached-fruit and dark-spiced-cake cassia.