Questions we are asked about fresh cheese – and the lines that make it

Cottage cheese is a fresh, unripened cheese made from pasteurised skim milk. The milk is acidified with lactic cultures, set with a small dose of rennet, cut into grains, cooked, washed and cooled – and the drained cheese grains are then blended with a cream dressing and salt. The fat in the finished product comes almost entirely from the dressing, which is why 1 %, 2 % and 4 % versions can be made from the same cheese grains.

In six steps: skim milk goes into a closed vat; cultures and rennet set it into a gel; the gel is cut into cheese grains and cooked under gentle agitation while whey is drawn off; the cheese grains are drained, washed with chilled water and cooled; the liquid is separated from the cheese grains; and the cheese grains are blended with dressing before filling. In an NDT line these steps run in the Multi-Cheese Vat, the Draining Washer Cooler, the Drum Drainer and the Creamer Blender Vertical, enclosed from milk to filler.

The size of the cheese grain, set by how the gel is cut in the vat. Small cheese grains are typically below 4 mm, large cheese grains above 8 mm. In a recipe-controlled vat the cut is the same in every batch, so a dairy can run both sizes on the same line.

Drained, washed cheese grains without dressing. It is sold to manufacturers as an ingredient for dips, bakery fillings, high-protein products and lactose-free ranges, and it is the base that the dairy itself dresses into 1 %, 2 % or 4 % cottage cheese.

The cream-based liquid blended with the cheese grains before packaging. It can be based on cream, whey, fermented cream or combinations, with salt and sometimes stabilisers or flavour. Dressing decides the fat content, mouthfeel and viscosity of the product; uniform blending decides whether every tub tastes the same.

Roughly 11–12 g of protein per 100 g, with 1–4 g of fat depending on the dressing and about 70–100 kcal. Protein is close to half the energy content, which is why cottage cheese has moved from the back of the dairy case to the protein shelf.

Typically 2–4 weeks in a conventional open process. Closed, continuously operating production with sterile air and cleaning-in-place supports a shelf life of 40–50 days in unopened packaging in cold storage.

Cottage cheese is cut, cooked and washed cheese grains in a dressing. Quark is a smooth acid-set fresh cheese without cheese grains. Ricotta is made from whey, not milk. Paneer is made by flocculating hot milk with acid and pressing the cheese grains into a firm block that does not melt. Each needs a different process – which is why NDT builds three different lines.

High protein from whole food, a short ingredient list, naturally low fat, and social media that turned it into an ingredient rather than a side dish. US retail sales grew by about 19 % in value in 2025, UK volumes by about 28 %, and European dairies are adding capacity. Our insight pages Why cottage cheese, why now and Cottage cheese: why it is growing have the figures and sources.

Demand has grown faster than capacity. Much of the world's cottage cheese is still made in open vats with manual cutting and draining, and a vat cycle of 12–16 hours limits output. Dairies are responding by replacing open vats with closed, automatic vats and by converting lines from other products.

A fresh, firm, unripened cheese used across South Asia and increasingly in Europe and North America. It is made by coagulating hot milk with acid – not with rennet and cultures – and pressing the cheese grains into a block that holds its shape when fried or grilled.

Standardised milk is heated to about 85–90 °C, cooled to about 70 °C and flocculated with citric or lactic acid to a pH of about 5.2–5.4. The whey is drained, the cheese grains are filled into moulds, pre-pressed and pressed into blocks, and the blocks are chilled in cold water before cutting and packing. NDT's paneer line does this in flocculator tanks, a compact high-capacity drum drainer and an automatic mould pre-press filling machine, with mould handling, pressing station and cooling tunnel.

No. Paneer is coagulated by heat and acid alone. That is why it needs a different process from cottage cheese, halloumi and other rennet-set cheeses – and why NDT builds it as a separate line with flocculator tanks instead of a cheese vat.

Typically 17–18 kg from cow milk and 21–23 kg from standardised buffalo milk at 51–54 % moisture. Fat standardisation, heating, coagulation temperature and pressing all affect the yield; a line that controls them by recipe gives the same yield from batch to batch.

Because the proteins are coagulated by heat and acid without the acidity and calcium changes that let rennet-set cheese flow. The block softens when heated but keeps its shape, which is what makes it usable for grilling, frying and curries.

Fresh paneer keeps about one to three weeks refrigerated depending on hygiene and packaging, and considerably longer in vacuum packs with a heat treatment. Closed, automatic production and chilled water cooling are the main levers for a longer and more consistent shelf life.

Flocculator tanks for the heat-and-acid coagulation; a drum drainer to separate cheese grains from whey; a mould pre-press filling machine with weight control; mould conveyors, mould stacking and de-stacking; a pressing station; a cooling tunnel; a mould turner and a mould empty/discharge station; and a cheese cutting machine for portions. NDT delivers this as one line – a new design implemented in Canada.

Partly. The moulding, pressing, mould handling and cutting equipment is shared. The coagulation step is different – flocculator tanks for paneer, a Multi-Cheese Vat for halloumi – and halloumi needs a heating section. A dairy that wants both normally runs two curd-making sections into shared downstream equipment.

Send us your reference product, how much you make or how much milk you have, the specification of your skim milk, and your location. We answer with a line proposal and the numbers behind it. A budget quotation for a standard line is normally available within 24–48 hours; a detailed proposal with layout adapted to your building follows after a technical dialogue.

It depends on capacity, scope and the building. A single Multi-Cheese Vat into an existing line is a different project from a multi-vat plant with drainers, blenders, sterile air and control system. We prefer to answer with a line proposal for your case rather than a price range; a budget figure is available within 24–48 hours.

Typically around nine months from order to commissioning for a complete line, depending on scope and building work. Engineering and production take most of the time; installation, factory acceptance test (FAT), site acceptance test (SAT) and commissioning with your cheesemakers follow.

The line proposal states what the line will deliver on your milk, your recipe and your running hours, and those figures go into the contract: yield, cheese grain, cycle time, capacity and service. They are confirmed in commissioning, batch by batch, before you take the line over.

Yes. NDT delivered the first closed-vat cottage cheese plant in the USA in 2025 and has delivered paneer lines and cheese cutting machines in Canada since 2022, with a cottage cheese line under delivery. Raman Process is NDT's representative for the USA and Canada; Food-Ing.ch GmbH (Patrik Zweifel) represents NDT in Switzerland.

Yes. New cutting technology, Draining Washer Coolers and Drum Drainers, sterile air and steaming, UVC treatment of brine and modern recipe control are delivered into existing lines – ours and others' – as upgrades.

One planned service stop per year at 24/7 production on the Multi-Cheese Vat, remote support with an agreed response time, critical spare parts held for your line, software and recipe updates, refresher training and an annual review of yield, cycle time and losses. A service agreement fixes all of it in one document.

Hygienic stainless-steel design with drainable surfaces and no dead legs, cleaning-in-place without disassembly, sterile air and steaming where the product is exposed. Materials, standards and documentation for your market are stated in the line proposal.