Diesel

The Diesel is a no-frills, high-impact pub concoction. It's a cheap thrill of lager, cider, and blackcurrant, designed more for effect than nuanced flavour. You'll find it ordered by students or anyone looking for a quick, potent buzz without breaking the bank. It's unapologetically rough around the edges, a true working-class pint that delivers on its promise of a good time.

Diesel

4.50 from 10 votes

Calories: 32kcal

Prep Time: 3

Total Time: 5

Ingredients

▢ 0.5 Pint(s) Larger Beer
▢ 0.5 Pint(s) Cider Beer
▢ 1 Dash(s) Blackcurrant Soda

Instructions

▢
Pour the lager first then add the blackcurrant cordial. Top up with the cider. The colour sholud be very dark approaching the colour of Guiness. Drink several of these and watch the room spin around! N.B. Only the cheapest lager and cider from the student

Estimated Nutrition:

Calories: 32kcal (2%)Carbohydrates: 3g (1%)Sugar: 2g (2%)

Where it came from

The Diesel is a staple of British pub culture, particularly popular among students and those on a budget. Its exact origin is hazy, likely emerging from the late 20th century as a simple, potent mix of readily available ingredients rather than a crafted cocktail with a specific inventor.

This drink sits squarely in the beer cocktail family, a close cousin to the Snakebite (lager and cider) and the Lager & Black (lager and blackcurrant). What sets the Diesel apart is the specific combination of all three, creating a darker, fruitier, and often more boisterous pint.

You'd typically encounter a Diesel in a bustling student union bar, a no-nonsense local pub, or at a casual house party. It's not a cocktail bar showpiece; it's a session drink for socialising without pretension, best enjoyed in a loud, unpretentious setting.

What it tastes like

On the palate, the Diesel hits with a muddled mix of flavours. You get the crisp, slightly bitter notes of lager upfront, quickly followed by the tart, apple-forward character of cider. The blackcurrant cordial adds a sweet, jammy fruitiness that mellows the sharper edges, leading to a surprisingly smooth, albeit somewhat indistinct, finish.

Given it's half a pint of lager and half a pint of cider, the ABV will hover around 4-5.5%, depending on the specific brands used. This makes it comparable to drinking a single strong beer, but the combination can feel heavier than a standard pint. It's definitely a full-sized drink, not a light sipper.

The technique

Building a Diesel is straightforward. Start with a chilled pint glass. Pour your half pint of lager first, then carefully add the dash of blackcurrant cordial. Finally, top it up slowly with the cider. The goal is a dark, layered appearance, mimicking a stout.

The key technique is the slow pour of the cider. Adding it gently over the back of a spoon or against the side of the glass helps maintain the distinct layers, preventing the blackcurrant from fully mixing with the lager and giving you that desired dark, almost Guinness-like colour. Rushing it just makes a muddy brown mess.

Drink Buddy Exclusive

Tell us what's in your cabinet.

Our Cocktail Builder takes whatever bottles you've got and hands you every drink you can actually make tonight.

Open the Builder →

Get the Drink Buddy newsletter

One drink, one tip, one Tuesday a month.

Plus the recipes we drop before they hit the site. Zero spam.

Ingredient Spotlight

The bottles that make or break this drink.

Lager Beer

Use: Any standard, inexpensive lager like Carling, Foster’s, or Budweiser works best. The point is a light, crisp base.
Skip: Don’t bother with craft IPAs or strong pilsners; they’ll overpower the other ingredients and defeat the drink’s simple purpose.
Why: The lager provides the crisp, carbonated base and much of the alcohol content, setting the stage for the cider and blackcurrant.

Cider Beer

Use: A dry or medium-dry apple cider is ideal. Strongbow or similar pub ciders are perfect for this.
Skip: Avoid overly sweet fruit ciders, as they can make the entire drink cloying and throw off the balance with the blackcurrant.
Why: Cider adds a tart, fruity counterpoint to the lager and contributes significantly to the overall alcohol content and flavour complexity.

Blackcurrant Cordial

Use: A standard, concentrated blackcurrant cordial, like Ribena (undiluted), is what you need for colour and flavour.
Skip: Blackcurrant juice will be too dilute and won’t provide the necessary intensity of colour or sweetness from just a dash.
Why: This ingredient provides the signature dark colour and a sweet, jammy depth that rounds out the beer and cider, giving the Diesel its distinctive character.

Three Variations

Three real ways bartenders riff on this drink. Same idea, three different jackets.

Snakebite

Lager and Cider, no blackcurrant.: A simple mix of lager and cider, without the blackcurrant, for a lighter, crisper beer cocktail that focuses on the apple and malt notes.

Lager & Black

Lager and Blackcurrant.: Just the lager and blackcurrant cordial, offering a sweeter, fruitier pint that’s less complex than a full Diesel, highlighting the berry flavour.

Poor Man’s Black Velvet

Lager and Stout with blackcurrant.: For a darker, richer profile, swap the cider for a dark stout or porter, maintaining the blackcurrant for depth and a more direct approach to the Guinness-like appearance.

What if I don't have…

Quick substitutions for when the bottle shop is closed.

No Larger Beer?

Use a light ale or a pale ale. The flavour will be less crisp but still work as a carbonated base.

No Cider Beer?

Try a perry (pear cider) for a similar tart, fruity profile, though it might be slightly sweeter and less apple-forward.

No Blackcurrant Cordial?

A dash of grenadine can mimic the sweetness and colour, but the berry flavour will be different and more generically red fruit.

No pint glass?

Any large drinking glass or a sturdy mug will do the job, though it won’t have the same pub feel or layering visibility.

Frequently Asked Questions

Direct answers to what people search for after Googling this drink.

What is in a Diesel?

A Diesel contains 0.5 pint of lager beer, 0.5 pint of cider beer, and a dash of blackcurrant cordial.

Why is it called a Diesel?

The name likely refers to its dark, almost oily appearance, especially when layered correctly, and its reputation as a potent, ‘heavy’ drink.

Is a Diesel a strong drink?

It contains the equivalent alcohol of roughly two standard beers, so it can be quite potent, especially if consumed quickly.

How do you get the dark, Guinness-like colour?

The dark colour comes from the blackcurrant cordial, which is layered between the lager and cider, and further darkened by the mixing of the two beers.

What’s the difference between a Diesel and a Snakebite?

A Snakebite is a mix of lager and cider. A Diesel adds a dash of blackcurrant cordial to this combination, making it fruitier and darker.

Can you use any type of lager or cider?

While you can, the Diesel is traditionally made with inexpensive, standard lager and a dry or medium-dry cider to keep it simple and budget-friendly.

Is a Diesel served cold?

Yes, like most beer cocktails, a Diesel is best served well chilled to maintain its refreshing qualities.

Is the Diesel a common drink?

It’s a well-known pub and student drink in the UK, especially among those looking for a potent and economical option.

From the Drink Lab catalogue

Drink Lab has been collecting cocktail recipes since 2013. Some we wrote ourselves, plenty came in from readers, and the rest got passed across a bar somewhere along the way.

Last updated May 8, 2026 · 1 min read