Kielbasa

Doneness

Coins are browned and slightly curled at the cut edges, the casing has blistered and crisped, and the sausage is steaming-hot through the centre. Polish kielbasa is sold fully cooked, so deep browning and heated-through is the finish line — there's no raw-to-done colour change to watch for. If the edges are still pale and flat, give it another minute or two; if the casing has split and the coins look dried out, they were left in too long.

Oil & seasoning

No oil needed — smoked kielbasa renders plenty of its own fat as it heats, which is what browns the cut faces. A light spray helps only on lean turkey or chicken kielbasa, which renders less.

Season with: Classic browned coins (the version most people want): nothing added — the sausage is already smoked and seasoned. Brown the coins and serve with grainy mustard, sauerkraut, or piled in a bun., Kielbasa and peppers: add sliced bell peppers and onion to the basket for the last 6–7 minutes for a quick sheet-pan-style sausage-and-peppers; toss once when you shake the coins., Glazed party bites: brush the coins with a brown-sugar-and-mustard or BBQ glaze in the last 2–3 minutes so it caramelizes into a sticky coat without burning., Whole segments for a plated main: cut the ring into 3–4 inch pieces instead of coins and cook 10–12 minutes, flipping at 6, then slice to serve — fewer crisp edges but juicier inside..

Watch out for

• !Most kielbasa is fully cooked and smoked — check the package. If it is, you're heating and browning, not cooking from raw, so it's done once it's hot through (165 °F) and the edges have browned; over-cooking dries it out and splits the casing. Fresh (uncooked) kielbasa is the exception — cook those to 160 °F like other raw sausage.
• !Slice into coins or pierce whole pieces. A sealed un-pierced link traps steam and can burst in the basket. Cutting into coins solves it; if you cook whole segments, score or prick them first.
• !Single layer, and shake at the halfway mark. Overlapping coins steam each other pale where they touch — the browned edges come from contact with the moving hot air, so give them room and shake at 4 minutes.
• !Kielbasa renders fat as it cooks, and a little smoke is normal when that fat hits the hot element. If your fryer smokes heavily, add a tablespoon of water to the drawer beneath the basket to stop the drippings from scorching.