Calories in sweet potato and onion layer: 124 kcal

What’s in a 300 g serving

More than half of a serving is water. The rest is 69.9 g carbohydrate and 10.2 g protein.

5.4 gFat

10.2 gProtein

69.9 gCarbohydrate

6.6 gFibre

204 gWater

3.6 gMinerals and the rest

5.4 gFat
10.2 gProtein
69.9 gCarbohydrate
6.6 gFibre
204 gWater
3.6 gMinerals and the rest

Below average for dishes

Sweet potato and onion layer is 124 kcal per 100 g. The 603 dishes in this database average 180.

Sweet potato and onion layer124

Dishes average180

Low in fat

1.8 g of fat per 100 g; the UK “low fat” line is 3 g.

Fat, per serving5.4 g

Saturates, per serving3.1 g

Vitamins and minerals in sweet potato and onion layer

One of the 22 recorded reach the “high in” level. Vitamin A leads.

204 %

Vitamin A

1.63 mg in a 300 g serving

14th of 470 dishes

Vitamin A contributes to the normal function of the immune system, to the maintenance of normal vision and to the maintenance of normal skin.

Potassium1125 mg56 %

Manganese1.1 mg56 %

Chloride366 mg46 %

Phosphorus279 mg40 %

Copper0.39 mg39 %

None recorded

Vitamin D

Show all 22 with amounts

Vitamin A1.63 mg, 204 %

Potassium1125 mg, 56 %

Manganese1.1 mg, 56 %

Chloride366 mg, 46 %

Phosphorus279 mg, 40 %

Copper0.39 mg, 39 %

Thiamin (vitamin B1)0.42 mg, 38 %

Vitamin C30 mg, 38 %

Vitamin B120.0009 mg, 36 %

Calcium261 mg, 33 %

Pantothenic acid (vitamin B5)1.8 mg, 29 %

Iodine0.039 mg, 26 %

Niacin (vitamin B3)3.9 mg, 24 %

Vitamin B60.27 mg, 19 %

Riboflavin (vitamin B2)0.24 mg, 17 %

Magnesium63 mg, 17 %

Iron2.1 mg, 15 %

Folate0.03 mg, 15 %

Zinc1.5 mg, 15 %

Vitamin E0.93 mg, 7.8 %

Selenium0.003 mg, 5.5 %

Vitamin Dnone recorded

Badges use the UK legal thresholds per 100 g: 15 % of the reference intake for “source of”, 30 % for “high in”.

What sweet potato and onion layer doesn’t give you. And where to find it.

No recorded vitamin D, and only 1.8 % of the selenium reference intake and 2.6 % of the vitamin E reference intake per 100 g.

Vitamin D

0mgin sweet potato and onion layer

Find it inBloater, grilled500 % per 100 g

Selenium

1.8%in sweet potato and onion layer, per 100 g

Find it inKidney, pig, fried491 % per 100 g

Vitamin E

2.6%in sweet potato and onion layer, per 100 g

Find it inSunflower seeds, toasted326 % per 100 g

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0.075 mgSelenium, 136 %

0.00125 mgVitamin D, 25 %

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Made in Cambridgeshire

Made in the UK since 1998, with every nutrient and its declared amount listed on the label.

Sweet potato and onion layer against other dishes

Per 100 g, sweet potato and onion layer has the most vitamin A of the 6 here, ahead of cheesecake.

0.544mg

0.283mg

0.232mg

0.163mg

0.139mg

0.136mg

Sweet potato and onion layerthis page

Cheesecake−0.261 mg

Quiche, Lorraine, wholemeal pastry−0.312 mg

Curry, chick pea dahl and spinach, with vegetable oil−0.381 mg

Methi aloo−0.405 mg

Bhaji, okra, Islami−0.408 mg

All values per 100 g, from the same dataset. Differences are against sweet potato and onion layer.

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Questions about sweet potato and onion layer

Four questions chosen by the facts above, so every food answers differently.

How many calories are in a portion of sweet potato and onion layer?

A typical portion (300 g, one serving) gives 372 kcal. Per 100 g the figure is 124 kcal.

Is sweet potato and onion layer high in vitamin A?

Yes. Sweet potato and onion layer has 0.544 mg vitamin A per 100 g, 68 % of the NRV, above the 30 % threshold for a “high in” claim.

Are these figures exact for sweet potato and onion layer?

No. They are calculated from a standard recipe in the UK Composition of Foods Integrated Dataset (CoFID, 2021). A different recipe, portion of sauce or cooking method will move them, so read them as a typical estimate.

Which vitamins and minerals does sweet potato and onion layer have most of?

By share of the daily reference intake: vitamin A (0.544 mg, 68 %), potassium (375 mg, 19 %) and manganese (0.37 mg, 19 %) per 100 g.

How these numbers were made

Every figure comes from the UK Composition of Foods Integrated Dataset (CoFID), 2021 edition, record 15-884, Sweet potato and onion layer, published by Public Health England under the Open Government Licence v3.0; this record is a calculated recipe estimate. Main data references: Updated 2014. Values are per 100 g of the edible part; a serving is 300 g, one serving, the usual UK portion for dishes. Reference intakes follow Regulation (EU) 1169/2011 Annex XIII as retained in GB law; “source of”, “high in” and “low” follow Regulation (EC) 1924/2006, assessed per 100 g. Function lines are the authorised wording from the GB register of nutrition and health claims, credited to the nutrient. Energy is rounded to the whole kcal and kJ; other amounts to one decimal, or two below 1. A trace is shown as “trace” and never gets a figure or a badge; a nutrient never analysed is left off the page. We start from the dataset’s 2,887 records and keep 2,322: records weighed with bone, shell or skin, alcoholic drinks, infant foods, brand-named products, records with fewer than eight measured vitamins and minerals and near-identical variants are left out. Group context uses the 603 dishes kept from the dataset; a rank counts only the foods with a measured figure for that nutrient. Food images are illustrations from Ingredient Atlas, released under CC0; they show the food, not the measured sample, and where no illustration of the exact food exists the nearest one is shown (here: Sweet Potato). Checked 5 October 2026. Contains public sector information licensed under the Open Government Licence v3.0.