The easiest way to feed butterflies in a habitat is with Gatorade or another already-prepared juice drink. As is, Gatorade and fruit juice have the sugar and water needed in order to provide nutrients to your butterflies. Use these for food if you want to be able to feed your butterflies quickly and easily. If you're willing to put a little more time and effort into your butterfly food to ensure maximum nutrition, make your own food solution. Mix 3 ounces (88.7 ml) of water or Gatorade with 1 teaspoon (4.9ml) of simple syrup. Then, add in 6 drops of soy sauce. To make your own simple syrup, add 1 cup (240ml) of sugar to 1 cup (240ml) of water. Almost bring the mixture to a boil, but remove it from heat just before it starts to boil. To make the food appealing to your butterflies, you'll need to serve it in a proper container. The smaller and shallower the container is, the better. Opt for a saucer or bottle lid if possible. Simply fill the dish or container, lower it into the habitat, and close the habitat. You can also use a small cup or a candle votive, but since these options are deeper, make sure to fill the container with marbles for the butterflies to stand on while they eat. Fruit serves as an adequate food source for all different types of butterflies, so this might be the best option if you have a variety of species in your habitat. Take a skewer or a piece of bamboo and slide chunks of fruit onto it. Then, set it in the habitat. If the fruit won't stay on the skewer, secure a bread twist tie underneath the bottom piece of fruit. Butterflies instinctually gravitate towards bright areas, so they'll have an easier time finding the fruit if it's located in a brighter part of their habitat. Place fruit skewers horizontally on the butterflies' habitat floor or set them up vertically in a corner in the brightest part of the habitat. They should be able to find and consume the food themselves.

Summary:
Use Gatorade or fruit juice as an easy solution. Make your own creative butterfly food solution to get the best results. Serve liquid food in a small, shallow container for easy access. Provide skewered fresh fruit when you have several butterfly species. Place fruit in the brightest area of the habitat.