For car boot sale refreshments, choose sealed bars with a clear protein amount per individual bar and keep the original wrapper available so buyers can inspect ingredients, allergens and storage instructions. A selection can include a bar providing around 20g protein alongside a labelled vegan option, but neither protein content nor a vegan label establishes suitability for every buyer. If your selling activity is a food business, check the applicable registration and allergen-information duties before trading.
Choose bars whose individual wrappers remain intact and readable. The protein amount, ingredients, allergens and storage instructions all matter when visitors are deciding at the stall. If your activity is a food business, selling sealed bars does not remove the need to consider registration and allergen-information duties.
Compare the amount in one bar, not just the claim on the front of the pack. Tesco Groceries lists 21g protein per 60g bar for Grenade Carb Killa Chocolate Chip Salted Caramel; Myprotein describes its Layered Protein Bar as providing 20g per bar, while PhD lists 21g per 64g Smart Plant bar. Check the exact flavour and serving shown on the pack.
A vegan label and an allergen declaration answer different questions. PhD labels Smart Plant suitable for vegans and vegetarians, but the Salted Caramel version includes soya and peanut paste. Buyers should inspect the declaration for the exact bar rather than relying on a brand name or a neighbouring flavour.
Start with protein per wrapped serving, then check the exact flavour’s label and whether you can store and offer the bars in their original packaging.
| Priority | What to check | Your needs |
|---|---|---|
| Protein per bar | Read the grams of protein and the serving size for one bar. Compare like-sized servings where possible; a pack claim does not tell you the amount in each portion. | I want visitors to see how much protein they get in the bar they are buying. If around 20g per bar is my selection aim, I need to check each flavour rather than assume every product from a brand reaches it. |
| Nutrition and flavour | Compare the exact flavour’s per-bar and per-100g nutrition information, including energy, sugars and saturated fat. Read the ingredients alongside any low-sugar or no-added-sugar wording. | There should be flavours people might choose as a snack, but I do not want a protein or sugar claim to stand in for the full nutrition panel. |
| Dietary labels and allergens | Check vegan or vegetarian labelling separately from the ingredients and allergen declaration. Keep the original wrapper readable, including any precautionary allergen wording. | Someone asking for a plant-based bar may still need to avoid soya or peanuts. I need the exact pack available for them to inspect, not an assumption about the whole range. |
| Sweeteners and polyols | Read the ingredient list and any on-pack consumption warning for the chosen flavour. The NHS notes that some polyols can have a laxative effect when consumed in large amounts. | If I offer a low-sugar bar, I want buyers to be able to check its sweeteners and warnings for themselves, especially when buying several bars. |
| Packaging and storage | Check that individual wrappers are intact and legible, and follow each product’s storage instructions. Check best-before dates and the condition of stock before the event. | I need bars I can keep in the conditions stated on their packs throughout the sale, rather than leaving stock exposed to heat or damp. |
| Selling arrangements | Establish whether your activity is a food business before trading. Check organiser conditions and the applicable registration and allergen-information requirements; packing food yourself can change the labelling duties. | If I am selling refreshments rather than only buying a snack for myself, I need to settle the trading and labelling arrangements before the event. |
A protein figure alone does not describe a bar’s energy, sugars, saturated fat or ingredients. In its 2025 UK snack-bar audit, Action on Salt & Sugar reported that 64% of the products assessed were classified as ‘less healthy’ under the Government’s Nutrient Profiling Model; that product-audit figure is not a measure of what buyers prefer.
Compare the full nutrition panel for the exact bar and describe its stated contents rather than presenting it as universally suitable.
PhD Smart Plant Salted Caramel is labelled vegan but includes soya and peanut paste. Tesco Groceries lists milk and soya for Grenade Carb Killa Chocolate Chip Salted Caramel and warns that it may contain gluten-containing cereals, peanuts and nuts. Some bars also contain polyols, which the NHS says can have a laxative effect in large amounts.
Keep flavours distinct and leave their original ingredient lists, allergen declarations and consumption warnings available for buyers to read.
Repacking changes what information is available on an individual portion. GOV.UK guidance says food businesses must provide allergen information, while food packed before selection and sold from the same location can fall within prepacked-for-direct-sale labelling requirements, including a food name and full ingredients list.
Use intact manufacturer packaging if that suits your sale. If you prepare or repack food, check your circumstances with the relevant local authority before trading.
Outdoor selling conditions may make a pack’s storage instructions harder to follow. The Tesco Groceries listing for Grenade Carb Killa Chocolate Chip Salted Caramel instructs buyers to keep it in a cool, dry place.
Plan where stock will sit during transport and at the stall. Check dates and wrappers before offering bars, and confirm current stock with the retailer when planning quantities.
These references describe particular ranges or products, not a guarantee that every flavour has the same ingredients or nutrition values.
Grenade’s Carb Killa and Soft Core names cover different bars, so compare the precise flavour and serving rather than treating them as interchangeable.
The Layered Protein Bar is a separate option for comparing protein per bar and flavour-level labelling.
Smart Plant provides a labelled vegan and vegetarian route distinct from PhD’s other protein bars.
Barebells offers original, soft and vegan protein-bar ranges, with details that differ by product.
Quest is a comparison reference when reading protein amounts across bar ranges.
Tesco is a retailer reference for checking individual protein-bar listings, rather than a protein-bar manufacturer.
These Grenade multipacks offer Oreo and Soft Core flavours for a car boot sale selection. Their pack sizes and named bar weights differ; check each exact flavour’s wrapper for protein, allergens, sweeteners and storage instructions before offering individual bars.
No image available
The four-bar pack offers an Oreo flavour in 60g bars. For sale as individual refreshments, check that each wrapper shows the nutrition and allergen information buyers need.
No image available
This is a larger pack of Oreo flavour 60g bars. Compare the individual bar’s label and your storage capacity before choosing a quantity for the event.
No image available
Double Chocolate provides a Soft Core flavour in 50g bars. Because this serving size differs from the 60g Oreo bars, compare protein per individual bar rather than pack size alone.
No image available
Golden Caramel adds another flavour in the 12-bar Soft Core pack size. Read its own ingredients and per-bar nutrition panel instead of assuming they match Double Chocolate.
No image available
This 12-bar pack has a Peanut Butter flavour and 50g bars. Keep its original allergen declaration visible and do not present the flavour name as a substitute for the full ingredient list.
If your activity is a food business, Food Standards Agency guidance says to register at least 28 days before trading or starting food operations. Whether your particular activity falls within that requirement depends on its circumstances; check with the relevant local authority and the event organiser before the sale.
Keeping sealed bars in their original wrappers lets buyers read the manufacturer’s ingredients, allergens and storage instructions. If you pack food before a customer selects it and sell it from the same location, including an applicable temporary outlet, prepacked-for-direct-sale rules can apply. GOV.UK guidance identifies requirements including the food name and a full ingredients list; check the labelling duties for your activity before repacking.
Not necessarily. PhD labels Smart Plant suitable for vegans and vegetarians, but its Salted Caramel bar includes soya and peanut paste. Check the exact flavour’s ingredients and allergen declaration with the buyer.
No. Compare protein and serving size alongside the exact bar’s energy, sugars, saturated fat and ingredients. In its 2025 UK snack-bar product audit, Action on Salt & Sugar reported that 64% of assessed bars were classified as ‘less healthy’ under the Government’s Nutrient Profiling Model; a single front-of-pack claim does not describe the full nutrition panel.
Some low-sugar bars use polyols. The NHS says some polyols can have a laxative effect when consumed in large amounts, and Myprotein’s Layered Protein Bar information warns about excessive consumption. Keep the chosen bar’s ingredients and on-pack warnings available for buyers to inspect.