Mobay is one cheese made from two, stacked on top of each other with a line of ash between them.
The upper layer is a goat's milk cheese and the lower one is made from sheep's milk, and a thin seam of grape vine ash runs along the join.
It comes from Carr Valley in Wisconsin, and it is a deliberate American answer to a French idea rather than a copy of one.
In This Article
Two Milks, Two Layers, One Line of Ash
The wedge is built rather than blended. Each half was a finished cheese in its own right before the two were stacked, which is a different operation from stirring two milks into one vat.

Two separate cheeses are made, one from goat's milk and one from sheep's milk, then set together with grape vine ash laid between them so the pastes stay distinct.
Both milks are pasteurized and the finished cheese is semi-soft, which is what allows the layers to bond without either one collapsing into the other. The format is the product.
Semi-soft is doing more work here than it sounds. A hard paste would sit on the ash without knitting to it and a fully soft one would slump across the seam, so the texture window that makes this format possible is narrow.
Nothing about a goat cheese or a sheep cheese is unusual on its own, and the reason to buy this one is that you get both in a single bite with a visible line telling you where one ends.
Why It Is Not an American Morbier
Everyone reaches for the comparison, and it only half works.
| Mobay | Morbier | |
|---|---|---|
| Milk | Two animals, goat above sheep | One animal, cow throughout |
| What the layers are | Two separately made cheeses | Morning and evening curd from the same herd |
| The ash line | Grape vine ash as a deliberate divider | A traditional line from the original farm practice |
| What you taste | A contrast between two milks | One milk with a seam through it |
Morbier takes curd from two milkings of the same cows and separates them with ash, so the line marks time rather than species.
Mobay borrows the visual idea and changes the variable underneath it, and that difference is the whole point on the palate.
In Morbier the two halves taste closely related. In Mobay they taste like what they are, two different animals meeting at a seam.
The difference shows up in how each one sits on a board. A slice of Morbier reads as one cheese with a stripe and can go anywhere in a lineup, while Mobay behaves like two cheeses and wants space either side of it.
It also changes who the cheese suits. Anyone who dislikes goat milk spots it immediately in Mobay and can eat the lower half instead, which is not a choice Morbier gives anybody.
The Wisconsin Cheesemaker Behind It
A cheese assembled this way needs someone with the confidence to try it and a plant with the room to run two separate makes and then bring them together.
The Carr Valley plant in La Valle dates to 1902 and was founded by the Mueller family, who ran it until Sid Cook bought it in 1986.
Cook is a fourth-generation cheesemaker. His mother's family opened one of the first cheese plants in Vernon County in the 1890s, he was helping in a plant before he was twelve, and he held a cheesemaking licence at sixteen.
He is also a Certified Master Cheesemaker, a Wisconsin credential awarded only to veteran cheesemakers who complete a training programme running some fifteen years on top of a working career.
By the count of his own trade, Cook has taken more top national and international awards than any other cheesemaker in North America.
The same producer makes Marisa, a sheep's milk cheese that shows up in Mobay's lower layer in spirit if not in the same form.
Mobay itself has collected serious recognition, including first place at the 2009 World Championship Cheese Contest and a silver medal at the 2011 World Cheese Awards.
Tasting Mobay Three Ways
Buy it and you get three tastings rather than one, which is unusual value out of a single wedge and worth planning before you cut into it.
Cut a sliver from the goat layer alone, then one from the sheep layer alone, then a full-height piece that carries both. The producer and its retailers describe exactly this as the way to meet the cheese.
The goat side reads brighter and tangier. The sheep side sits rounder and richer underneath it, with the density sheep's milk brings, and eaten alone it would read as a straightforward good sheep cheese.
The combined bite is the reason the cheese exists. Sheep richness carries the goat tang further than the goat layer manages alone, and the result is described as both delicate and rustic at once.
Wipe the knife between the three slivers. Sheep paste is the richer of the two and it coats a blade, so an unwiped knife carries that richness straight into the goat tasting and quietly ruins the comparison.
Taste in that order rather than starting with the whole slice. Once you have eaten the combination, going back to isolate a single layer is much harder to do honestly.
Leave a gap before the third bite. Sheep fat stays on the tongue and flatters whatever follows it, so a rushed combined taste reads more integrated than the cheese really is.
What the Line of Ash Actually Does
The black seam is grape vine ash, and it is edible, which is the first question anybody asks when a stripe of something black turns up through the middle of a wedge.
Ash has a long history in cheesemaking as a surface and layering material, and nothing about it needs trimming away before serving.
Its job here is mostly structural and visual. It keeps two soft pastes from merging into one another and it makes the construction legible the moment somebody looks at the cut face.
Do not expect it to taste of much. An ash line contributes very little flavour of its own compared with the milks either side of it, so anyone hunting for a smoky note in the seam will be disappointed.
The seam does tell you which way up the cheese was made. Goat sits above sheep, so a wedge lying on a board with the ash line low has been turned over somewhere between the counter and the table.
Cutting a Layered Cheese Without Losing the Point
Cut vertically, straight down through both layers. A flat horizontal slice takes only one milk and turns a two-layer cheese into an ordinary one, which is the most common way people waste it.

Go tall and thin rather than short and thick. A slender full-height slice keeps the proportion between the two layers close to what the cheesemaker intended.
A cheese wire beats a knife for the first cut through a whole piece. Wire passes through both pastes at the same rate, while a blade pushes the softer layer ahead of it and leaves the seam rounded instead of square.
Serving Mobay to People Who Have Not Met It
Stand the slices up so the seam faces the person you are serving.

The cheese explains itself visually if you let it, and a flat pile on a board hides the one feature that makes it worth discussing.
Keep the accompaniments plain. Neutral crackers and a few nuts leave room for the contrast, while a strong chutney flattens the difference between the layers into one sweet note.
Serve modest portions, because the sheep layer carries enough richness that a large piece tires the palate before the goat side gets credit.
Say what it is before anyone takes a slice. The three-way tasting only happens if people know there are two milks in front of them, and most eaters will treat an unexplained wedge as one cheese.
Put out fewer slices than you think and refill from the fridge. Cut faces on a semi-soft cheese dull within the hour on a warm board, and the seam loses its edge first.
Buying and Keeping a Layered Cheese
Buy a piece that still shows a clean straight seam, because that one line is the quickest read you get on how carefully the cheese has been handled since it left the plant.
A cut face where the ash line has smeared into either paste has been handled roughly, and the layers will look muddled on your board even if the cheese tastes fine.
Ask for it cut fresh where you can. Semi-soft cheese dries at the cut face faster than a hard wheel does, and a piece sitting pre-wrapped for a week loses definition at exactly the edge you want people to see.
Wrap it in cheese paper or parchment rather than tight plastic, then keep it in the cold part of the fridge. Both layers hold moisture, and sealing them airtight encourages a damp surface rather than protecting the seam.
Bring it out well before serving. A cold semi-soft cheese mutes the goat brightness first, which is the half of the cheese most likely to go unnoticed.
What to Drink With It
One bottle has to suit two different milks, which narrows the field.
| Pairing | Why It Works |
|---|---|
| Medium-bodied white | Enough acidity for the goat layer without stripping the sheep layer. |
| Lighter red | Low tannin keeps the sheep richness intact rather than drying it. |
| Dry cider | Acidity and a little sweetness bridge the two milks. |
| Avoid heavy tannin | Big structured reds fight the sheep layer and bury the goat one. |
Acidity is the safer lever than weight. A wine with brightness meets the goat layer where it lives, and the sheep layer has enough fat of its own to survive without a heavy partner.
Pour it properly cold as well. Warmth softens the acidity that has to reach across the seam, and a slack glass leaves the goat layer with nothing to answer.
What to Use Instead of Mobay
Nothing reproduces it exactly, because two milks in one wheel is genuinely uncommon.
- For the look: Morbier gives you the ash line and the layered cut face without the milk contrast
- For the effect: serve a sheep cheese and a goat cheese side by side and taste them together
- For the producer: another Carr Valley sheep or mixed-milk cheese keeps the house character
- Wrong direction: any single-milk cheese sold as similar, which loses the only feature that matters
The side-by-side approach is the honest substitute. You lose the single-bite integration that the layered format delivers, but you keep the contrast between two milks, which is what the cheese is really selling.
Match the textures when you build it. A firm crumbly goat log beside a semi-soft sheep cheese gives you the milk contrast, but the two never meet the way they do in one slice.