How to seal mylar properly: jaw width, dwell time, failures
A 12-inch impulse sealer crosses a gallon bag in one pass. Most seal failures come from two-pass overlap, food in the seal line, or not checking.
September 2026
Oxygen absorbers: how to size them without guessing
Size to the container, not the food: 300cc for a gallon bag. Round up, buy individually packed, and never confuse them with desiccants.
Mylar bags explained: thickness, sizes and what to buy
Buy 7 mil for long storage. Here is what the mil number means, which sizes to keep, and why zipper bags are the wrong choice for a deep store.
Hidden costs nobody mentions: circuits, space, noise
The circuit, the floor space, the noise and the consumables. None appear as a price on a spec sheet, and together they can add over a thousand dollars.
Freeze dryer financing and layaway: how the plans work
Blue Alpine lists layaway on its Elite trims at around $308 to $400 a month. Layaway is not finance - you get the machine at the end, not the start.
What size freeze dryer do I need? Capacity by household
Match the load you generate, then check the circuit. Tray area matters more than tray count, and cold trap capacity is the real ceiling.
Cheap freeze dryers: what you give up under $3,000
Two machines qualify honestly at under $3,000. Below about $2,500 you are usually looking at a dehydrator with the words in the title.
The real cost per bag: mylar, absorbers and sealing
Packaging a gallon bag costs about $0.72. Here are the line items per batch, and the four false economies that cost you the whole load.
How much electricity does a freeze dryer use?
A Blue Alpine Medium uses 13 to 21.6 kWh per cycle, costing $2 to $8.60 depending on your rate. Here is the arithmetic and three ways to cut it.
Is a freeze dryer worth it? The break-even arithmetic
Break-even depends on whether you are preserving food you already have or buying food to dry. Here is the honest calculation for both cases.
Blue Alpine vs Stay Fresh: the two brands worth your money
A $296 price gap, two very different tray philosophies, and one machine that ships from Idaho against one from Los Angeles.
Blue Alpine Select vs Elite: is the $600 worth it?
Per-tray sensors, a fresh air valve and KF fittings. We go through which of the three actually changes a batch.