Like many sandwiches, the cheese & onion sandwich is highly reliant on mayonnaise. In fact, there’s more mayonnaise than onion – so perhaps it should really be called a ‘cheese & mayonnaise’ sandwich.
Of course, the mayonnaise is an essential ingredient because it’s responsible for holding together the grated cheese and chopped onion, which would otherwise fall out and create a very messy sandwich.
Still, you may feel that there is too much mayonnaise – or you insist on a free range or reduced fat variety.
There is variance between the type of mayonnaise used in the different cheese & onion sandwiches on the market and the percentage of the sandwich that it constitutes. Here’s the lowdown.
Amount of Mayonnaise in Cheese & Onion Sandwiches
We surveyed 13 cheese & onion sandwiches on the market. Unfortunately, only 6 state their percentage mayonnaise in their ingredients, which means the amount per pack is also otherwise not determinable.
It’s Asda that gives you the most mayonnaise in your cheese & onion sandwich – 38.9g to be exact, which equates to 24% of each 162g pack. It’s unclear whether or not the mayonnaise is free range, reduced fat or seasoned.
Out of the 6 brands that do state their percentage mayonnaise, it’s The Co-operative’s cheese & onion sandwich that has the lowest percentage – just 17% of it is free range mayonnaise.
On the other hand, if you’re looking for the cheese & onion sandwich with the least total amount of mayonnaise, you’ll want to go for the reduced fat Sainsbury’s Be Good to Yourself cheese & onion sandwich. It only has 25.9g of free range mayonnaise per 144g pack.
Median Amount of Mayonnaise
Reduced Fat Sandwiches
As you would expect, the Sainsbury’s reduced fat cheese & onion sandwich contains slightly less mayonnaise (18% or 25.9g) than its standard counterpart (19% or 28.5g).
Morrisons also sells a reduced fat version of its cheese & onion sandwiches alongside the standard version, but neither declares its amount of mayonnaise.
Types of Mayonnaise in Cheese & Onion Sandwiches
Free range mayonnaise is made with eggs that come from free range hens. It is used in most of the cheese & onion sandwiches on the market, including M&S, Morrisons, Sainsbury’s, The Co-operative Food, Urban Eat and Waitrose.
Seasoned mayonnaise, used by the cheese & onion sandwiches from Morrisons and On the Go!, usually means that salt and black pepper are added for extra flavour.
Reduced fat mayonnaise is used by the Tesco Everyday Value cheese & onion sandwich, but not by the Morrisons and Sainsbury’s reduced fat cheese & onion sandwiches.
The Greggs cheese & onion sandwich is unique in that it uses a blend of mayonnaise and salad cream. Salad cream is similar to mayonnaise, also made with eggs, but with a sweeter flavour.
Nutrition of Mayonnaise
Mayonnaise is very high in unsaturated fat but moderate in saturated fat. It’s also a good source of vitamin E. Less promisingly, it’s known as a calorically dense food, with an energy content of 680kcal per 100g.
Find out more about the nutrition of cheese & onion sandwiches here.
The Full Picture…
Here’s a comparison table where you can compare each sandwich’s type of mayonnaise, its percentage mayonnaise and the equivalent amount of mayonnaise per pack.
|Sandwich||Mayonnaise Type||Percentage Mayonnaise||Mayonnaise Per Pack|
|Average||Most Frequent: Unseasoned Free Range (7 of 11)||Median: 19%||Median: 29.2g|
|Asda Cheese & Onion||24%||38.9g|
|On the Go! Cheese & Spring Onion||Seasoned||20%||33.6g|
|Urban Eat Cheese & Onion||Free Range||19%||29.8g|
|Sainsbury’s Cheese & Red Onion||Free Range||19%||28.5g|
|Sainsbury’s Be Good To Yourself Cheese & Red Onion||Free Range||18%||25.9g|
|The Co-operative Cheese & Onion||Free Range||17%||26.7g|
|Morrisons Cheese & Onion||Seasoned Free Range|
|Morrisons Reduced Fat Cheese & Onion||Free Range|
|Tesco Everyday Value Cheese & Onion||Reduced Fat|
|M&S Cheese & Onion||Free Range|
|Waitrose Cheese & Onion||Free Range|
|Greggs Cheese & Onion||Mayonnaise and Salad Cream|
|Tesco Cheese & Onion|
Mayonnaise in Other Sandwiches
How does the amount of mayonnaise in cheese & onion sandwiches compare to other mayonnaise-based sandwiches, such as tuna, egg, prawn and chicken? Find out here.