Chop the onion and fry it slightly in 2 Tbsp olive oil
Add shrimp to the onion (no need to defrost them beforehand, add them to the pan immediately). Cook for 5 minutes on medium heat
Add rice, stir and cook for 3 minutes
Add lemon juice and wine here. Cook over medium heat, stirring occasionally, until the wine evaporates
Pour water over everything so that it only covers the rice (cook, stirring occasionally, until the rice is ready, add more water if necessary)
When the rice is ready, add grated lemon zest, turmeric, paprika, salt, pepper, parsley and butter
Mix everything well and remove from heat.