Storing pellets through a humid New England summer

If you only do one thing for next week’s pizza nights, do this: get your pellets out of the bag and into something sealed.

Hardwood pellets — the small compressed pucks the Ninja Woodfire and the Ooni Karu burn — are basically dehydrated sawdust. They’re engineered to be about 6–8% moisture. Above 10% they start to swell, crumble, and feed unevenly. In a Ninja’s hopper, that’s a stalled bake. In an Ooni Karu’s fuel tray, it’s smoke and a stubborn flame.

Coastal New England summer humidity routinely sits at 70–90%. Pellets notice immediately.

The setup

A few rules of thumb that have held up for us:

1. Get them out of the paper bag the day they come home. Paper wicks moisture from the floor and the air.
2. One sealed bucket per blend. A 5-gallon bucket with a Gamma Seal lid holds about 30 lb — roughly two bags. We label the lid with the species (“oak,” “maple,” “cherry blend”) and the open date.
3. Throw a desiccant in. Two food-safe silica gel packs at the bottom, recharged in the oven every couple of months. It’s the cheapest insurance you can buy.
4. Keep them off the deck. Pellets stored on a wood deck pick up ground-level humidity fast. Inside the garage on a shelf is fine. The shed in August is not.

Tells that they’ve gone soft

• The pucks crumble into sawdust when you pinch one.
• The bottom of the hopper has more dust than pellets.
• The Ninja takes longer than usual to come up to pizza temp.
• Smoke that’s gray and acrid instead of thin and pale.

If a bag has gotten away from you, don’t fight it. Pellet dust composts fine, and the next bag will run cleaner for it.

Bad fuel is the most expensive thing in a backyard pizza kit. Damp pellets cost you a Friday night and a sticky burn pot.

A note on species

We rotate three. Oak for everyday neutral heat. Maple when we want a sweeter, rounder smoke note. Cherry blend for bread bakes and the occasional dessert pie. Mix-and-match is fine — pellets don’t care about your opinions, only your moisture.

Get them sealed up now. Future-you will be glad on the first warm Friday.