Dark Chocolate Buying Guide: How to Choose the Right Bar in the UK

Dark chocolate can vary considerably in cocoa content, sweetness, texture, flavour and ethical credentials. A higher percentage does not automatically mean a better choice, while an attractive front-of-pack claim may not tell you everything about the ingredients or allergens.

Before adding dark chocolate bars to your basket, watch for three common buying pitfalls:

• Assuming cocoa percentage tells the whole story: 70% dark chocolate and 85% dark chocolate usually taste more intense and less sweet than lower-cocoa options, but cocoa percentage does not by itself confirm quality, origin or texture.
• Confusing flavour descriptions with ingredient quantities: “Orange”, “raspberry”, “nuts” or “sea salt” may refer to small quantities of inclusions or flavourings. Check the ingredients list and quantitative ingredient declaration where available.
• Overlooking allergens and dietary suitability: Dark chocolate may contain milk, soya, nuts, peanuts, gluten or traces of other allergens. “Dark” does not automatically mean vegan dark chocolate.

The key specifications to check

1. Cocoa solids and sweetness

Cocoa solids provide much of the characteristic bitterness and roasted flavour associated with dark chocolate. A 70% dark chocolate generally offers a balance between cocoa intensity and sweetness, making it suitable for everyday snacking or pairing with coffee.

An 85% dark chocolate usually contains less sugar and has a more pronounced, bitter cocoa profile. It may appeal to shoppers who enjoy a slow-melting square after dinner or want chocolate for baking. However, recipes differ: some use cocoa mass, cocoa butter and sugar only, while others include vanilla, emulsifiers or additional cocoa powder.

Use the percentage as a starting point rather than a complete quality measure. Compare the ingredient order and sugar content per 100g as well.

2. Inclusions and flavour balance

For dark chocolate with nuts, check which nuts are used and their percentage. Almonds, peanuts and other tree nuts have different textures and allergen considerations. Tony’s Chocolonely Dark Chocolate, Almonds & Sea Salt 180g lists almonds at 10% and sea salt at 0.5%, giving shoppers clear quantities to compare.

Fruit bars can use pieces, purée, preparation or flavouring. Lindt Excellence Raspberry Intense Dark 100g lists freeze-dried raspberries at 2%, while Divine Chocolate 70% Dark Chocolate with Raspberries 90g lists freeze-dried raspberry pieces at 3%. These figures help set realistic expectations about the balance between chocolate and fruit.

With dark chocolate with sea salt, a small quantity can create a noticeable contrast. Lindt Excellence A Touch Of Sea Salt Dark 100g lists sea salt at 0.3%; it also contains milk and soya, so it is not suitable for every dietary requirement.

3. Ethical, organic and dietary claims

If sustainability matters, look for recognised certification details rather than relying only on words such as “ethical” or “responsible”. Some products in this range identify Fairtrade cocoa, sugar or vanilla, while Green & Black’s 70% and 85% bars provide organic and Fairtrade information on their product descriptions.

Certification wording can include mass-balance qualifications, meaning certified and non-certified ingredients may be mixed within the permitted system. Read the label carefully if you require a specific certification standard.

For vegan shoppers, check the full ingredients and allergen statement every time. Milk ingredients or “may contain milk” warnings can appear in dark chocolate, including bars that do not look creamy.

Our Top Recommendations by shopper profile

MATCH FOR: Budget-Conscious Starters

Cadbury Bournville 180g

Why This Fits Their Persona: The 180g format suits regular cupboard storage and sharing, offering a familiar lower-cocoa starting point for shoppers moving towards dark chocolate.

How It Avoids the Trap

Its label states a minimum of 36% cocoa solids, so buyers can compare it honestly with higher-cocoa bars rather than assuming every dark bar has similar intensity.

Key Advantage & Pros

180g net quantity; suitable for everyday snacking and sharing. Contains milk and soya, with possible nut traces.

MATCH FOR: Premium Quality Seekers

Green & Black's Dark Chocolate Dark 85% 90g

Why This Fits Their Persona: The high cocoa percentage and listed organic and Fairtrade details suit shoppers seeking a more intense bar with ethical credentials.

How It Avoids the Trap

The packaging information identifies 85% minimum organic cocoa solids and explains the Fairtrade mass-balance wording.

Key Advantage & Pros

85% cocoa solids; organic ingredients identified; 90g portioned bar. May contain nuts and milk.

MATCH FOR: Specific Use-Case/Heavy Users

Tony's Dark Chocolate 180g

Why This Fits Their Persona: A larger 180g bar works for frequent home use, baking, sharing or portioning alongside coffee and desserts.

How It Avoids the Trap

The product description specifies 70% minimum cocoa solids and states that cocoa mass, sugar and cocoa butter make up 99% of the Fairtrade-traded ingredients.

Key Advantage & Pros

70% cocoa solids; 180g format; Fairtrade information supplied. Contains soya and may contain gluten, eggs, milk and nuts.

MATCH FOR: Fruit-Flavour Explorers

Divine Chocolate 70% Dark Chocolate with Raspberries 90g

Why This Fits Their Persona: This compact bar suits shoppers who want fruit-led flavour, a 70% cocoa base and a smaller format for gifting or an occasional treat.

How It Avoids the Trap

The ingredients identify freeze-dried raspberry pieces at 3% and state a minimum of 70% cocoa solids, rather than leaving the fruit quantity unclear.

Key Advantage & Pros

70% cocoa solids; Fairtrade ingredients stated; 90g bar. Contains milk, so check the label if seeking vegan dark chocolate.

FAQ: Buying dark chocolate in the UK

Is 85% dark chocolate healthier than 70% dark chocolate?

Neither cocoa percentage nor the word “dark” makes a product automatically suitable for a particular health goal. An 85% bar commonly contains less sugar than a 70% bar, but recipes vary. Compare the nutrition panel, portion size and ingredients, and enjoy chocolate as part of a balanced diet.

How should dark chocolate be stored?

Keep the bar sealed in a cool, dry and dark place, away from heat, sunlight and strong odours. Refrigeration is generally unnecessary and can affect texture or cause condensation. Always follow the storage instructions on the packaging.

How long does an opened dark chocolate bar last?

Shelf life depends on the best-before information, storage conditions and whether the packaging is resealed. Once opened, wrap the bar or place it in an airtight container. A pale surface can result from fat or sugar bloom; this may affect appearance and texture, but the packaging guidance should take priority.