Foods & cuts · Sweet potato

Sweet potato slices

Quarter-inch slices, eight to ten minutes. Cut much thinner than an ordinary potato because the sugar will scorch long before a thick slice cooks through.

What it is

Form: Cut vegetable
Typical weight: 150–300 g
Typical thickness: 6–8 mm
Cut: Not a cut of anything

Why it behaves as it does

North Dakota State specifies quarter-inch slices at eight to ten minutes — notably thinner than the half-inch that suits courgette or onion. That is the sugar talking: a sweet potato browns and then blackens at a heat an ordinary potato simply tolerates, so the answer is to reduce the distance heat has to travel rather than to lengthen the cook. It is the clearest vegetable example of thickness being chosen to suit the food rather than the knife.

When is it done?

Food-safety endpoint

BBQHQ holds no food-safety rule for this food. We are not showing you another jurisdiction’s figure in its place — check your national food-safety authority.

Texture endpoint — how you actually know

Tender and caramelised at the edges

The slice bends and the cut faces have darkened. Cut at a quarter of an inch it cooks before the sugar has time to burn; cut thicker it will blacken first.

How long it takes

Sweet potato slices, grilled

Estimated cooking window

8 min–10 min

Low confidence

Why this is a range, not a number

Cookers hold temperature imperfectly
Individual animals and pieces differ

Cook to the endpoint, not to the clock. The window tells you when to start checking.

What this rests on

BBQHQ publishes a window for this cook.

Observations: 1
Documents: 1
Publishers timing this cook: 1

North Dakota State University Extension

Why confidence is not higher

At least one source does not state the cooker temperature.

How the sources were combined

ONE PUBLISHER, STATED AS A TOTAL. North Dakota State gives 8–10 minutes and no grill temperature, saying only that the time depends on the heat of the grill. BBQHQ publishes it as it stands and does not manufacture a second voice for it.

What makes the window as wide as it is

Cookers hold temperature imperfectly
Individual animals and pieces differ

When it goes wrong

Burnt outside, underdone inside: Vegetables charred outside and hard in the middle — 2 distinguishable causes.

Afterwards

Cooling, keeping and reheating what is left is general guidance for barbecue leftovers. Neither UK authority publishes anything specific to sweet potato slices, and BBQHQ does not invent a distinction they do not make.