Disgusting ingredients hidden in favourite foods – including MAGGOTS

Forget synthetic colourings or saturated fats – there could be far more disgusting ingredients lurking in your food.

From wood in ice cream to maggots in tomato puree, many highly processed foods contain mixtures of stomach–turning additives.

Some of these unsettling additions slip in by accident under shockingly high legal limits, while others are deliberately added for flavour and texture.

And while it might be off–putting, many of your favourite treats wouldn’t be quite the same without them.

Even though many of these additives are considered ‘natural’, many come from unexpected sources that consumers wouldn’t expect.

To make matters worse, experts are concerned that some of these unusual ingredients could have harmful effects on our health.

Chris Young, food campaigner and coordinator of the Real Bread Campaign, told the Daily Mail: ‘Each individual additive has been tested and declared safe.

‘What hasn’t been tested, however, is whether there are any negative effects of consuming the cocktail of additives and far–from–natural ingredients.’

Bird feathers and hog’s hair in bread

One of the most common additives found in food is something called L–cysteine.

This is a flour conditioner used in bread manufacturing to make high–protein flours softer and fluffier when baked.

What most people don’t know is that L–cysteine is obtained by boiling feathers and hog’s hair.

Despite persistent rumours, L–cysteine is not extracted from human hair and doing so is explicitly banned under EU law.

However, you are very unlikely to ever see L–cysteine on the label of your supermarket loaf.

Mr Young says: ‘Supermarkets and industrial dough fabricators can choose not to declare some important facts about when, where, how and with what food is made.

‘For example, if something is deemed to be a “processing aid” rather than an additive, it doesn’t have to be listed on the label.’

The good news is that studies suggest L–cysteine might actually be quite good for you.

The amino acid, which naturally occurs in the human body, has been linked to improved memory, and even antidepressant and anti–anxiety effects in humans.

Beetle extract in cake

Any time you see carmine, E120, or natural red 4 on a food packet, you can be sure you’re eating beetle extracts.

Carmine, also known as cochineal extract, is a natural dye produced by grinding up the shells of a small beetle called a cochineal.

The vibrant pigment extracted from these Latin American insects has been used to colour clothes for hundreds of years, stretching back to the Aztec empire.

Today, the insects are mainly harvested in Peru on plantations of prickly pear cactus – the bug’s preferred food.

They are then dried, crushed, and soaked in alcohol to produce the carminic acid that eventually becomes carmine, with about 70,000 insects used to produce a pound of dye.

Since carmine is highly colouring and heat resistant, it is often used in food products such as Mr Kipling Angel Slices, Hartley’s Strawberry Jelly, and red M&Ms.

The colouring is completely safe for most consumers, but can cause a severe allergic reaction in some people.

This is why food companies are legally required to explicitly name it in ingredients lists, rather than lumping it under natural colours.

Bug secretions in jelly beans

Surprisingly, carmine isn’t the only insect–derived product that still plays a major role in processed food.

Shellac, often written on labels as ‘confectioners’ glaze’ or E904, is actually the resinous secretion of the female lac insect.

As the female feeds on tree sap, she creates a tunnel out of resin to protect her larvae from predators.

Farmers scrape these tunnels off the branches, which are then melted down to extract the pure resin.

You might be familiar with shellac as a common ingredient in nail varnish and wood treatments, but it also appears in many of our favourite sweets.

Treats like jelly beans and certain chocolates use a coating of shellac to produce a shiny, crunchy outer layer.

Since the resin is hardy and resistant to water, it helps keep the sweets fresh and ensures that they don’t become sticky in the bag.

Shellac is considered to be safe to eat and doesn’t have any known health side effects, though some people can experience a mild allergic reaction.

Sand in hot chocolate

Not every odd ingredient is added for flavour, and many are simply included to improve texture or shelf–life.

One of the most common is SiO2 or silicon dioxide, which you might know better by its unscientific name: sand.

Sand is often added to powdered food as an anticaking agent, to prevent clumping, and to make it easy to rehydrate.

This is why it can often be found in powdered drinks like hot chocolates, often only listed as ‘E551’.

A 2024 study found that this common additive significantly alters immune cell function in the gut.

In testing on mice, prolonged exposure led to more gut lining damage and higher inflammation levels.

Co–author Mark Wulczynsk, a PhD student at McMaster University, said: ‘Our research raises concerns that chronic intake of commonly used food additives in food processing, such as SiO2, could contribute to gastrointestinal immune–mediated diseases, such as food allergy or celiac disease.’

Maggots in tomato puree

Although some of these disgusting ingredients are added deliberately, others are accidental additions.

We can’t avoid the fact that the vegetables we eat grow in the ground and, therefore, often aren’t the cleanest by the time they reach the shelves.

That means natural products frequently contain surprisingly high levels of insect part contamination.

In the US, the Defect Levels Handbook sets the legal limits for much non–hazardous detritus that can end up in your food – and the levels are shockingly high.

Customers can legally find two maggots per 100 grams in their tomato puree, and up to 35 fruit fly eggs per cup of raisins.

Some foods are even more surprising, as a single cup of cornmeal can legally contain five whole insects, 10 insect parts, 10 rodent hairs, and five fragments of rodent faeces.

That doesn’t necessarily mean that your food will contain this much, but this is the upper limit to what could be included without legal consequences.

It is also worth noting that the UK and the EU have much stricter rules on insect contamination.

According to the Food Standards Agency, there are ‘no permitted tolerance levels for insect fragments’ and any visible contamination will generally trigger enforcement.

As Mr Young, of the Real Bread Campaign, explains, this means ‘no food can legally contain biological waste.’

Wood in ice cream

If you’ve ever stopped to read the ingredients on your ice cream, you might have spotted carboxymethyl cellulose and methyl cellulose, or cellulose gum.

While they are often described as coming from plant cell walls, they are really wood products usually made as waste in the wood pulp industry.

Most frequently, these cellulose products are used as emulsifiers, incorporating fats into liquids to add moisture to foods.

This is similar to the way that egg yolks are used to emulsify oil into mayonnaise.

Since our bodies can’t digest cellulose, it is also sometimes added as a filler to diet foods to produce a feeling of fullness without adding any extra calories.

Although generally considered safe, eating too much can cause digestive issues and produce a laxative effect.

Research into the long–term effects is limited, but one small study did find that eating carboxymethyl cellulose can harm the balance of microbes in the gut.

Seaweed in ham

Another chemical often used to add moisture to processed food is called carrageenan.

This is a thickener and emulsifier derived from a type of red seaweed called Irish moss.

Carrageenan is an extremely popular food additive, appearing in everything from yoghurt and ice–cream to nut milks and plant–based meat alternatives.

It is also a common binder in processed deli meats like ham and salami, added to help the meat retain moisture and to make it easier to slice.

Food–graded carrageenan is considered safe, but some scientists have raised concerns over potential health concerns.

Carrageenan is produced by treating seaweed with alkaline chemicals, but treating the same seaweed with acid produces something called degraded carrageenan.

Degraded carrageenan is not considered safe for human consumption as it can cause inflammation and irritable bowel disorder.

Some studies have suggested that carrageenan might react with the acid in our stomachs to create degraded carrageenan.

However, the evidence surrounding this issue is controversial, and research doesn’t yet suggest that food–grade carrageenan is unsafe in normal quantities.

Bacterial slime in salad dressing

Commonly used as a thickener and a stabiliser, xanthan gum can be found in almost everything from salad dressings to soups.

The slightly disturbing truth is that this common ingredient is actually a slimy goo produced by bacteria.

When a type of bacteria called Xanthomonas campestris ferments sugar, it creates a goo–like broth that can be solidified, dried, and turned into a powder.

Since its discovery in 1963, xanthan gum has been extensively tested and determined to be safe.

However, as a soluble fibre, your body can’t break down xanthan gum, and it forms a gel in your gut that slows down digestion.

Large doses can lead to an upset stomach and laxative effects but only if you eat 15 grams or more, which would be extremely difficult to do as part of a normal diet.