*Make pickled radish the day before for optimum taste
The term “bibim” means mixing various ingredients, while the “bap” noun refers to rice. This is a great way of using up leftover vegetables, just use what's in your fridge already. Traditionally, the different colours are symbolic and it is usual to have five or so different colours.
The key ingredient is Gochujang (red chili paste) is a savory, sweet, and spicy fermented condiment made from chili powder, glutinous rice, meju powder, yeotgireum, and salt. You can find it at Asian supermarkets or in your usual supermarket for example in Sainsbury's or Waitrose in the UK. If you can't find it, there are various recipes to make it online.
Other options: broccoli, pepper, edamame beans, spring onions, bean sprouts, avocado, & kimchi