Crowdie Sandwich

Crowdie is what was left in the pail once the good part had been taken out. On a Highland croft the morning's milk was set to let the cream rise, the cream was skimmed off for butter, and the thin soured milk underneath was warmed gently until it broke into soft curds and drained in a cloth. That drained curd is crowdie: a fresh, lactic, faintly grainy cheese with almost no fat in it, made to be eaten within a fortnight because nothing in it was built to keep. Spread thick on an oatcake, with or without a scrape of butter underneath, it is one of the oldest assembled bites in the Scottish repertoire.

The cheese decides everything because it does so little to hide behind. A good crowdie is sharply sour and clean, the curd just coarse enough to feel on the tongue, loose enough to spread but not wet enough to slump off the oatcake. Made carelessly it goes one of two ways. Drained too little and it weeps, sliding off the biscuit and soaking it grey. Drained too hard and it turns dry and chalky, crumbling rather than spreading and tasting of nothing but acid. The oatcake has its own narrow margin: a fresh one is dry and friable and snaps under the curd, while a stale or damp one bends and goes leathery, and a curd this moist will soften it within minutes once the two are put together.

The pairing is a study in opposites that need each other. The oatcake is dry, toasted, nutty, and structurally rigid; the crowdie is cool, wet, sour, and structurally loose. Bite through and the biscuit shatters first, sending oatmeal grit across the tongue, then the curd floods in cold and tart behind it, the fat-free sharpness cut by the toasty oat and the butter if it is there. There is no melt, no warmth, no aroma to speak of beyond a faint clean sourness like fresh yoghurt. Two bites finish it, and it tastes emphatically of a cold dairy and a dry griddle, which is exactly what made it.

It dresses up and down without losing its shape. The plainest version is curd on a buttered oatcake and nothing else, the crofter's standby. Gruth Dhu, sometimes sold as Black Crowdie or Gruth Dubh, rolls the drained curd in pinhead oatmeal and crushed black pepper, building a peppery crust into the cheese itself. Beaten with double cream it becomes a soft spread closer to a fresh cream cheese; folded with chopped chives or wild garlic it turns into a savoury topping for bannock or toast. Caboc, the rolled cream cheese in oatmeal, is often shelved beside it as a Highland fresh cheese but is a separate thing, richer and made from cream rather than from the skimmed milk crowdie depends on.

The name itself carries the thrift. Crowdie was once also the word for a plain dish of oatmeal stirred into water or milk, the daily gruel of the old Highland diet, and the cheese borrows the same homely register: not a thing made for sale or celebration but a thing made because milk was there and butter had first claim on the cream. It belongs to the same austere larder as the oatcake it sits on, both of them built from what a croft could produce without a market, both eaten at any hour the work allowed.

The cheese soured in a bathtub

Crowdie has no founding and no inventor, which fits a cheese that is essentially what happens to skimmed milk left in a warm kitchen. It is often said to reach back to the Viking occupation of the north, and possibly to the Picts before them, a fresh curd made in most crofts from milk the cream had already been lifted from; that deep antiquity is tradition rather than record, the kind of claim a very old food collects rather than proves.

What can be dated is the rescue. Crofting dairies declined through the mid-twentieth century, and crowdie had nearly vanished as a made cheese. In 1967 Reggie and Susannah Stone, running a small dairy with a handful of Dairy Shorthorn cows on the shores of the Dornoch Firth by Tain, set about reviving it after Reggie remarked that nobody made crowdie any more; Susannah soured a ten-gallon churn of milk in the family bath, and the result, more cheese than the household could eat, became Highland Fine Cheeses. A farmhouse curd that had drifted to the edge of disappearing was put back into production by one couple in a bathtub in Easter Ross.

That dairy still makes it. Run from Blarliath Farm at Tain, the firm Susannah Stone started kept crowdie and its peppered Gruth Dhu on the books for more than half a century, the recipe passing to her son Rory, who has headed the business since the 1990s. The cheese that began as the leftover of butter-making, eaten on an oatcake in a croft kitchen, now leaves a working Highland dairy in tubs every week, still fresh, still short-lived, still meant to be eaten within a fortnight of the milk going sour.