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Corny Keg vs Sanke Keg — Which One Should You Use?

If you're setting up a kegerator, one of the first decisions you'll make is what type of keg to use. For homebrewers, it usually comes down to two options: corny kegs (Cornelius kegs) and Sanke kegs (commercial kegs).

Corny Kegs — The Homebrew Standard

Corny kegs were originally used by the soda industry (Pepsi and Coca-Cola). When soda companies switched to bag-in-box systems, homebrewers snapped up the surplus. They've been the default homebrewing keg ever since.

Two Types: Ball Lock and Pin Lock

  • Ball lock — more common, slightly taller and narrower. This is what most homebrewers use.
  • Pin lock — slightly shorter and wider, with pin-style connectors. Cheaper but harder to find parts for.

If you're buying new, go ball lock. It's the standard.

Pros

  • Easy to open and clean — the lid pops off with a quick release
  • Easy to fill — just pour your beer in through the top
  • Widely available — new and used, with tons of accessories
  • Pressure relief valve on the lid — easy to vent over-carbonation
  • 5-gallon size fits most homebrew batch sizes perfectly

Cons

  • Can be pricey new (~$80-120 each)
  • Used ones may need gasket replacement — cheap and easy, but worth noting
  • Only comes in 2.5 and 5 gallon sizes (mostly)

Sanke Kegs — The Commercial Standard

Sanke kegs are what you'll find at every bar, brewery, and beer distributor. If you've ever bought a keg of commercial beer, it was a Sanke.

Pros

  • Extremely durable — stainless steel, built to be thrown around by delivery drivers
  • Available in many sizes — 1/6 barrel (5.16 gal), 1/4 barrel (7.75 gal), 1/2 barrel (15.5 gal)
  • Can serve commercial kegs without any conversion — buy a keg from a brewery and tap it

Cons

  • Hard to fill with homebrew — you need a special Sanke filling adapter or a modified coupler
  • Hard to clean — you can't just pop the top off. Requires disassembly or a CIP (clean-in-place) setup
  • Requires a Sanke coupler — different from ball lock disconnects
  • Heavier and bulkier

So Which Should You Use?

For homebrewing → Corny kegs. No question. They're designed to be opened, filled, and cleaned by hand. The 5-gallon size matches a standard homebrew batch.

For serving commercial beer → Sanke. If you want to buy a keg from your local brewery and tap it at home, you need a Sanke coupler. Many kegerators come with one.

For a mixed setup — lots of homebrewers run a kegerator with mostly corny kegs for their own beer, plus one Sanke tap for a commercial keg when friends are coming over.

Can You Do Both?

Yes. You just need the right disconnects/couplers for each type. Your kegerator doesn't care what kind of keg is inside — it's all just beer line to CO2 to keg. The only thing that changes is the fitting that connects the line to the keg.

A tool like Keggio lets you track both corny and commercial kegs side by side — what's on tap, how much is left, and what style each one is.

The Verdict

Start with corny kegs. They're the gold standard for homebrewing — easy to use, easy to clean, and a perfect fit for 5-gallon batches. Add a Sanke coupler later if you want to serve commercial beer alongside your homebrew.