Boil some water in the kettle then add it to a large pot with a spoonful of salt.
Add olive oil to a pan on low-medium heat.
Fry garlic on low heat until softened, adding a splash of pasta water to prevent burning.
After about five minutes, add gochujang and miso paste with a spoonful of water.
Add butter and let it melt, stirring into the gochujang/miso/water emulsion.
Cook linguine in the pasta pot until just past al dente.
Transfer pasta to the saucepan and add a ladle of pasta water to loosen the sauce.
Serve and add parmesan if desired.
