Cheese & Dairy

Washed Rind & Smear Ripening

Also: washed-rind cheese, smear-ripened cheese, rotschmierkäse, fromage à croûte lavée

A cheese-aging technique in which the rind is repeatedly rubbed with brine, beer, wine, or spirits to cultivate Brevibacterium linens and allied microbes, producing characteristic orange-rust color and pungent aroma.

French: fromage à croûte lavée ('washed-crust cheese'); the technique is historically associated with monastic cheesemaking in medieval Europe, particularly in Alsace, Burgundy, and the Low Countries, where monks used available fermented liquids to maintain rinds during aging.

Definition

Washed-rind or smear-ripened cheeses are matured by regularly swabbing or submerging their exteriors in a liquid — most commonly a saturated salt brine, though craft producers use beer, wine, marc, Cognac, cider, or port — over a period of weeks to months. The moisture and salinity suppress most unwanted molds while selectively encouraging Brevibacterium linens, a rod-shaped bacterium responsible for the brick-orange to russet pigmentation and the sulfurous, barnyard aromas that define the style. Additional yeasts such as Debaryomyces hansenii and Candida species are often naturally present or deliberately inoculated; they de-acidify the rind first, raising pH to levels where B. linens can thrive. The result is ripening from the outside in: a supple, sometimes sticky or tacky rind encloses a paste that softens progressively toward the center. Aromas are typically far more assertive than flavor — experienced tasters describe notes of hay, locker room, roasted meat, and yeast beneath the pungency. Classic examples include Époisses de Bourgogne (washed in marc de Bourgogne), Limburger, Munster-Géromé, Taleggio, and Stinking Bishop. Washing intervals, temperature (10–14 °C / 50–57 °F is typical), humidity (>90 %), and the composition of the washing liquid are all variables the affineur adjusts to steer the final character.

In use

“The cellar master washes each wheel of Époisses every two days with marc de Bourgogne, a smear-ripening protocol that coaxes the characteristic burnt-orange rind and spoonable interior.”

Related terms

AffinageBrevibacterium linensBloomy RindNatural RindBlue Vein Piercing Halophile

References

1.Mastering Artisan Cheesemaking — Gianaclis Caldwell (2012)
2.The Oxford Companion to Cheese — Ed. Catherine Donnelly (2016)
3.Cheese and Culture — Paul Kindstedt (2012)
4.Fromages de France — Pierre Androuët (1971)

Confidence: high

Notes

Smell vs. Taste

Washed-rind cheeses are famously intimidating on the nose but comparatively mild on the palate. The volatile sulfur compounds responsible for the aroma are largely concentrated in the rind; once you eat through to the paste, sweetness, umami, and buttery richness dominate.

The role of salt concentration

Brine concentration is a key dial: too weak and undesirable molds colonize the rind; too strong and B. linens is inhibited along with them. Producers typically work in the 3–5 % salt range, though this varies by style and regional tradition.