Culture & the
microbial cast
Cheese has its own genetics session — except the "varieties" here are living organisms doing the flavor-making work, on the surface and inside the paste.
The cast of characters
Click through the organisms that turn milk into distinct styles:
Just as a wine yeast strain or a cacao fermentation culture shapes the final product invisibly, these bacteria and molds are doing the actual flavor-building work — the cheesemaker’s decisions (milk, moisture, salt, temperature) just set the stage for them.
Questions
Flashcards
Lock it in
From memory:
- What does Penicillium candidum do, and to which cheeses?
- What does Penicillium roqueforti do, and how is it introduced?
- What is B. linens responsible for?
- What creates the "eyes" in Swiss-style cheese?
- Why compare starter cultures to a wine or beer yeast strain?
Fresh &
unripened
The category people underrate because it looks simple. Fresh cheese is where milk and acid speak most directly, with almost nothing else in the way.
The fresh-cheese family
Click through the classics:
Fresh cheese has nowhere to hide — no aging to smooth over a mediocre milk, no rind to add complexity. A great chèvre or fresh mozzarella is a direct statement about the milk itself. Judge these on purity and freshness, not on the same axes you’d use for a two-year cheddar.
Questions
Flashcards
Lock it in
From memory:
- What sets chèvre apart from an aged cheese?
- What does pasta filata mean, and which cheese needs it?
- What actually develops feta’s character?
- Why is ricotta technically a byproduct?
- Where does fresh cheese sit on the moisture spectrum?
Bloomy rind
Brie and Camembert are the cheese world’s most recognizable style — and the mechanism behind that soft, oozy paste is a mold working from the outside in.
How a bloomy rind ripens
Penicillium candidum grows on the surface and produces enzymes that break down the paste from the rind inward — which is why a well-ripened wedge is often gooey near the edge and firmer at the center.
Young
Firm, chalky paste throughout; mild, fresh, lactic flavor. The mold hasn’t done much work yet.
Peak ripeness
Soft, often oozy band just under the rind; firmer core; earthy, mushroomy aroma balanced with buttery richness.
Over-ripe
Ripening has run all the way through; paste may be runny and the aroma sharp with ammonia — past its best, not necessarily unsafe.
Brie vs Camembert
Brie
- Traditionally a larger wheel
- From the Brie region of France; broader modern production
- Slightly milder in typical commercial versions
Camembert
- Traditionally a smaller wheel
- From Normandy; Camembert de Normandie is AOC-protected
- Often slightly more assertive when authentic
A bulging rind with a chalky, unripe core is a sign of uneven ripening — the surface got ahead of the inside (more in Session 15). A little ammonia at the rind is normal; a lot means it’s past peak.
Questions
Flashcards
Lock it in
From memory:
- Which direction does a bloomy rind ripen the cheese?
- What flavor family is typical of bloomy rinds?
- What does a strong ammonia smell usually mean?
- What mainly distinguishes Brie from Camembert?
- What should the paste look like at peak ripeness?