What Is a Growler?

A growler is a refillable container — typically 32 oz (howler) or 64 oz — that you bring to a taproom, have filled directly from the tap, and take home. Glass and stainless steel are the most common materials; stainless insulated growlers keep beer cold significantly longer.

The appeal is simplicity: no equipment required, fill it at the brewery, drink it at home. The limitation is freshness. Once a growler is opened, you have about a day before oxidation noticeably degrades the beer. Unopened, a properly filled and sealed growler lasts 3–7 days. Carbonation bleeds off fast once you crack it.

Growlers are best for: buying a specific brewery pour you can't get anywhere else, small quantities, and situations where you'll finish the beer the same day you open it.

What Is a Mini Keg?

A mini keg is a pressurized container, typically 5 liters (roughly 10–11 pints), filled under CO2 pressure at the brewery. The beer is sealed with an integrated tap or a compatible coupler and stays carbonated and fresh for weeks — sometimes months — as long as the keg hasn't been tapped.

Once tapped, a CO2-charged mini keg maintains pressure for about 2–4 weeks depending on temperature and how often you pour. Without gas (gravity pour), you have about 3–5 days before quality drops.

Mini kegs pair best with a kegerator or countertop tap that maintains cold temperature and proper CO2 pressure. Without refrigeration, serve time drops significantly. With the right setup, the pour quality is indistinguishable from a bar.

Freshness: Mini Keg Wins

This isn't close. A mini keg's pressurized seal keeps oxygen out entirely until you tap it. Even after tapping, a CO2-fed system prevents oxidation for weeks. A growler, by contrast, has air in the headspace from the moment it's filled, and that gap only grows as you pour.

If you want beer that tastes fresh over multiple sessions — rather than needing to finish it in one sitting — a mini keg is the clear choice.

The caveat: fill date matters for both. A mini keg filled three months ago isn't better than a growler filled yesterday. TapDrop sources directly from craft breweries nationwide and prioritizes recent fill dates.

Volume: Depends on Your Situation

A standard growler holds 64 oz — about 4 pints. A mini keg holds 5 liters — about 10–11 pints. If you're buying for a party, the math strongly favors mini kegs per dollar and per trip to the store.

For solo drinkers who like variety and don't want 10 pints of the same beer, a growler's smaller volume might actually be an advantage: you can rotate styles more easily.

TapDrop's 5-liter mini kegs hit the sweet spot for households of 2–4 people who want a week's worth of great beer without the bar tab.

Pour Quality: Mini Keg (With Proper Setup)

Pour a growler into a glass and you get a decent pour. Pour a mini keg through a proper CO2-pressurized tap and you get the bar experience — proper head, carbonation intact, temperature controlled.

The difference shows up most with carbonation-sensitive styles. Hazy IPAs, hefeweizens, and wheat beers that rely on a creamy, lively carbonation for their mouthfeel suffer in a growler after day one. In a pressurized mini keg system, they pour correctly every time.

You don't need a dedicated kegerator. Countertop tap systems work well for mini kegs. TapDrop offers kegerator rental plans starting at $29/month — the keg goes in the fridge, the tap goes on the counter, and you pour bar-quality beer whenever you want.

Cost Comparison

Growler economics: $10–$20 for the growler itself, $10–$20 for a fill at the taproom. Total per-session cost is relatively low, but you're driving to the brewery every time.

Mini keg economics: $25–$50+ for the keg depending on style and brewery, plus equipment if you don't have it. The per-pint cost is usually competitive with taproom prices — sometimes better — and you're not paying for the trip.

Over time, a mini keg setup paid for itself quickly if you were previously buying craft six-packs at $15–$20 each. Delivery saves the driving and the "I already paid for gas" rationalization that leads to extra purchases.

The Verdict

Choose a growler if: you want a small amount of a specific beer, you'll drink it the same day, and you live near a taproom.

Choose a mini keg if: you want bar-quality pours over multiple sessions, you're entertaining more than a couple people, or you'd rather have great beer come to you than drive for it.

TapDrop delivers 5-liter mini kegs from craft breweries nationwide directly to your door. Browse the catalog and see what's on tap.

Ready to experience great craft beer at home? TapDrop delivers 5-liter mini kegs from top breweries to your door, anywhere in the US.

Shop Mini Kegs →