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Shallots vs. Onions — Nutritional and Usage Differences

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Article author photo Jack  Yacoubian by Jack Yacoubian | Last updated on December 23, 2023
Medically reviewed by Elen Khachatrian Article author photo Elen Khachatrian
Shallot
vs
Onion

Summary

Shallots are richer in fiber, copper, manganese, phosphorus, iron, potassium, vitamin C, B6, and folate. Overall, shallots are more nutritious than onions (yellow onions). Shallots are sweeter and have a milder taste. Shallots are richer in phytochemicals. 

Introduction

This article is a comparison between shallots and onions. You might ask, "What's the difference between them?" They have several differences, primarily based on culinary usage, taste, and flavor. In addition to these, there are nutritional differences that we will be tackling in this article. 

Nutritional content comparison

This article compares 100g of yellow onions to 100g of shallots

Calories

Shallots are higher in calories compared to onions. 

Shallots contain 72 calories, whereas onions contain 40 calories. 

Carbs and fiber

Shallots are higher in overall carbs. However, they contain nearly twice the amount of fiber of onions. 

Fat and protein

Their fat and protein content is negligible

Oxalates

Onions contain 5mg of oxalates, whereas shallots do not contain oxalates. They have negligible amounts of oxalates. 

Minerals

Shallots have a richer mineral profile. It is richer in all minerals compared to onions. Shallots are significantly richer in copper, manganese, phosphorus, magnesium, iron, and potassium. 

Mineral Comparison

Mineral comparison score is based on the number of minerals by which one or the other food is richer. The "coverage" charts below show how much of the daily needs can be covered by 300 grams of the food.
:
1
Onion
Contains more Calcium +60.9%
Contains more Iron +471.4%
Contains more Magnesium +110%
Contains more Phosphorus +106.9%
Contains more Potassium +128.8%
Contains more Zinc +135.3%
Contains more Copper +125.6%
Contains more Manganese +126.4%
Contains more Selenium +140%
Contains less Sodium -66.7%
Calcium Iron Magnesium Phosphorus Potassium Sodium Zinc Copper Manganese Selenium 12% 45% 15% 26% 30% 2% 11% 30% 39% 7%
Calcium Iron Magnesium Phosphorus Potassium Sodium Zinc Copper Manganese Selenium 7% 8% 8% 13% 13% 1% 5% 14% 17% 3%
Contains more Calcium +60.9%
Contains more Iron +471.4%
Contains more Magnesium +110%
Contains more Phosphorus +106.9%
Contains more Potassium +128.8%
Contains more Zinc +135.3%
Contains more Copper +125.6%
Contains more Manganese +126.4%
Contains more Selenium +140%
Contains less Sodium -66.7%

Vitamins 

Shallots are richer in vitamins B1, C, B6, and folate. 

Overall, shallots contain more nutrients regarding their macros, vitamins, and minerals. 

Health Impacts

Onions are associated with anticarcinogenic, antibacterial, antithrombotic, and antiallergic properties.
Overall, you can expect to treat cancer with onions. However, lifelong proper nutrition reduces the risk of developing cancer (1). 

In comparison, shallots have been shown to have antioxidative and antiallergic activities. In addition, the consumption of shallots has been shown to have positive effects on the cardiovascular system and in the control of blood glucose levels in diabetes (2)(3)(4).

Raw shallots and raw onions are excellent vegetables to eat. 

The health benefits of both onions and shallots are derived from phytochemicals such as quercetin, flavonoids, phenolic compounds, and organosulfur. 

Shallots have a richer phytochemical profile than onions (5). From these are flavonoids, quercetin, phenolic compounds, and organosulfur.

General Differences

Usage

Onions are often used in stir-fry dishes and stews and overall in cooking. Shallots have a different flavor profile that can be used in garnishing, salad dressing, and sauces (vinaigrette).

In a recipe where you must caramelize onions, it's best to use shallots. This is mainly because shallots contain more carbs and sugars. 

For French onion soups, yellow onions are mainly used.

You can read about onion vs. garlic in this article. 

Taste and flavor

Shallots are smaller and have a sweeter, milder taste with a hint of garlicky (alliums) flavor. Onions are more pungent

They are both members of the allium family. 

Substitutions 

Well, you can substitute onions and shallots. However, the flavor profile of the dish might change. 

For example, swapping onions with shallots will add sweetness to salads. 

You can read about chives vs. scallions in this article. 

To prepare vegetable broths, you can use onions, shallots, white onions, red onions, leeks, and onion peel. 

Article author photo Jack  Yacoubian
Education: Haigazian Medical University
Last updated: December 23, 2023
Medically reviewed by Elen Khachatrian

Infographic

Shallot vs Onion infographic
Infographic link

Vitamin Comparison

Vitamin comparison score is based on the number of vitamins by which one or the other food is richer. The "coverage" charts below show how much of the daily needs can be covered by 300 grams of the food.
:
1
Onion
Contains more Vitamin A +100%
Contains more Vitamin E +100%
Contains more Vitamin B1 +30.4%
Contains more Vitamin B3 +72.4%
Contains more Vitamin B5 +135.8%
Contains more Vitamin B6 +187.5%
Contains more Folate +78.9%
Contains more Vitamin K +100%
Contains more Vitamin B2 +35%
Equal in Vitamin C - 7.4
Vitamin A Vitamin E Vitamin D Vitamin C Vitamin B1 Vitamin B2 Vitamin B3 Vitamin B5 Vitamin B6 Folate Vitamin B12 Vitamin K 1% 1% 0% 27% 15% 5% 4% 18% 80% 26% 0% 2%
Vitamin A Vitamin E Vitamin D Vitamin C Vitamin B1 Vitamin B2 Vitamin B3 Vitamin B5 Vitamin B6 Folate Vitamin B12 Vitamin K 1% 1% 0% 25% 12% 7% 3% 8% 28% 15% 0% 1%
Contains more Vitamin A +100%
Contains more Vitamin E +100%
Contains more Vitamin B1 +30.4%
Contains more Vitamin B3 +72.4%
Contains more Vitamin B5 +135.8%
Contains more Vitamin B6 +187.5%
Contains more Folate +78.9%
Contains more Vitamin K +100%
Contains more Vitamin B2 +35%
Equal in Vitamin C - 7.4

Macronutrient Comparison

Macronutrient breakdown side-by-side comparison
:
1
Onion
Contains more Protein +127.3%
Contains more Carbs +79.9%
Contains more Other +128.6%
Contains more Water +11.7%
Equal in Fats - 0.1
3% 17% 80%
Protein: 2.5 g
Fats: 0.1 g
Carbs: 16.8 g
Water: 79.8 g
Other: 0.8 g
9% 89%
Protein: 1.1 g
Fats: 0.1 g
Carbs: 9.34 g
Water: 89.11 g
Other: 0.35 g
Contains more Protein +127.3%
Contains more Carbs +79.9%
Contains more Other +128.6%
Contains more Water +11.7%
Equal in Fats - 0.1

Fat Type Comparison

Fat type breakdown side-by-side comparison
:
0
Onion
Contains less Saturated Fat -59.5%
Contains more Polyunsaturated fat +129.4%
Equal in Monounsaturated Fat - 0.013
24% 20% 56%
Saturated Fat: 0.017 g
Monounsaturated Fat: 0.014 g
Polyunsaturated fat: 0.039 g
58% 18% 24%
Saturated Fat: 0.042 g
Monounsaturated Fat: 0.013 g
Polyunsaturated fat: 0.017 g
Contains less Saturated Fat -59.5%
Contains more Polyunsaturated fat +129.4%
Equal in Monounsaturated Fat - 0.013

Comparison summary table

Pay attention to the rightmost column. It displays the amounts side by side, giving a clearer understanding of the difference.
Shallot Onion
Rich in minerals ok
Lower in Saturated Fat ok
Rich in vitamins ok
Lower in Sugar ok
Lower in Sodium ok
Lower in Glycemic Index ok
Lower in price ok
Lower in Cholesterol Equal

All nutrients comparison - raw data values

Nutrient Shallot Onion Opinion
Net carbs 13.6g 7.64g Shallot
Protein 2.5g 1.1g Shallot
Fats 0.1g 0.1g
Carbs 16.8g 9.34g Shallot
Calories 72kcal 40kcal Shallot
Fructose 1.29g Onion
Sugar 7.87g 4.24g Onion
Fiber 3.2g 1.7g Shallot
Calcium 37mg 23mg Shallot
Iron 1.2mg 0.21mg Shallot
Magnesium 21mg 10mg Shallot
Phosphorus 60mg 29mg Shallot
Potassium 334mg 146mg Shallot
Sodium 12mg 4mg Onion
Zinc 0.4mg 0.17mg Shallot
Copper 0.088mg 0.039mg Shallot
Manganese 0.292mg 0.129mg Shallot
Selenium 1.2µg 0.5µg Shallot
Vitamin A 4IU 2IU Shallot
Vitamin E 0.04mg 0.02mg Shallot
Vitamin C 8mg 7.4mg Shallot
Vitamin B1 0.06mg 0.046mg Shallot
Vitamin B2 0.02mg 0.027mg Onion
Vitamin B3 0.2mg 0.116mg Shallot
Vitamin B5 0.29mg 0.123mg Shallot
Vitamin B6 0.345mg 0.12mg Shallot
Folate 34µg 19µg Shallot
Vitamin K 0.8µg 0.4µg Shallot
Tryptophan 0.028mg 0.014mg Shallot
Threonine 0.098mg 0.021mg Shallot
Isoleucine 0.106mg 0.014mg Shallot
Leucine 0.149mg 0.025mg Shallot
Lysine 0.125mg 0.039mg Shallot
Methionine 0.027mg 0.002mg Shallot
Phenylalanine 0.081mg 0.025mg Shallot
Valine 0.11mg 0.021mg Shallot
Histidine 0.043mg 0.014mg Shallot
Saturated Fat 0.017g 0.042g Shallot
Monounsaturated Fat 0.014g 0.013g Shallot
Polyunsaturated fat 0.039g 0.017g Shallot

Which food is preferable for your diet?

ok
ok
is better in case of low diet
Shallot Onion
Low Fats diet Equal
Low Carbs diet ok
Low Calories diet ok
Low Glycemic Index diet ok

People also compare

Vitamins & Minerals Daily Need Coverage Score

The summary scores indicate the extent to which this food can fulfill your daily vitamin and mineral requirements if you consume 3 servings, consisting of 100 grams of each (an approximation of 3 serving sizes).
Vitamins Daily Need Coverage Score
15%
Shallot
8%
Onion
Minerals Daily Need Coverage Score
21%
Shallot
8%
Onion

Comparison summary

Which food is richer in minerals?
Shallot
Shallot is relatively richer in minerals
Which food is lower in Saturated Fat?
Shallot
Shallot is lower in Saturated Fat (difference - 0.025g)
Which food is richer in vitamins?
Shallot
Shallot is relatively richer in vitamins
Which food is lower in Sugar?
Onion
Onion is lower in Sugar (difference - 3.63g)
Which food contains less Sodium?
Onion
Onion contains less Sodium (difference - 8mg)
Which food is lower in glycemic index?
Onion
Onion is lower in glycemic index (difference - 15)
Which food is cheaper?
Onion
Onion is cheaper (difference - $0.1)
Which food contains less Cholesterol?
?
The foods are relatively equal in Cholesterol (0 mg)

References

All the values for which the sources are not specified explicitly are taken from FDA’s Food Central. The exact link to the food presented on this page can be found below.

  1. Shallot - https://fdc.nal.usda.gov/fdc-app.html#/food-details/170499/nutrients
  2. Onion - https://fdc.nal.usda.gov/fdc-app.html#/food-details/170000/nutrients

All the Daily Values are presented for males aged 31-50, for 2000-calorie diets.

Data provided by FoodStruct.com should be considered and used as information only. Please consult your physician before beginning any diet.