As al-fresco dining season unfolds, why not include the wildlife? The delightful 'butterfly cocktail' ensures that butterflies can join the fun.

If you're eager to invite butterflies into your garden, you might already know that a butterfly house and vibrant flowers do wonders. But there's a new, unexpected method to cultivate a pollinator-friendly garden—and it involves a little creativity with your drinks.

Sean McMenemy, a wildlife expert, suggests that butterflies have a soft spot for a unique cocktail made with beer, and you can elevate it with rum. Here's how you can make it.

Crafting Your Butterfly Cocktail

Orange and black butterfly landing on a purple flower

(Image credit: Getty Images/Carolin Hoegger)

For a simple version, mash an overripe banana and mix in brown sugar along with some stale beer.

To refine this recipe further, Sean recommends adding dark rum and/or soy sauce. For the best results, let the mixture ferment for a few weeks or months before using it.

If you prefer an alcohol-free alternative, create a sugar solution by boiling one part sugar with four parts water.

Butterfly on a flower

(Image credit: GettyImages)

While observing the butterflies, you might notice their curious behavior. They tend to seek out fermented drinks and fruit, indulging in them to boost their mating gifts called spermatophores. Interestingly, they often enjoy nutrient-rich mud or even animal dung.

If you're interested in more wildlife garden ideas, consider leaving out overripe fruit, vegetables, or designated butterfly food to attract them. Leaving any fallen fruit you won't eat under trees is also a great option.

Additionally, you can entice butterflies by setting up a bug hotel and planting bright, fragrant flowers that provide nectar. They are particularly drawn to buddleja shrubs, commonly known as the butterfly bush.