If you are using frozen prawns then make sure they are fully defrosted - either place in a colander and rise with cold water, or leave in the fridge overnight to thaw.
Place the prawns in a bowl and cover with the olive oil, herbs and spices. Mix with a spoon to make sure they are evenly coated with seasoning. Pop them back in the fridge while you prep the slaw.
Mix the carrots, cabbage, spring onion and red pepper in a large bowl.
In a small jug, whisk together all the ingredients for the dressing.
Slowly add the dressing to the slaw mix, making sure to keep mixing everything together - depending on how saucy you like your slaw you may not need all the dressing.
Taco Sauce is super simple - just mix all the ingredients together in a small bowl and add salt & pepper to taste, and adjust the amount of hot sauce to your preferred level of spice.
For the Guac, slice the avocado and scoop out the flesh. Add the lime juice and mash it up before adding the onion and a pinch of salt.
When all your condiments are prepared and it's time to eat, heat up your tortillas - you can either wrap them in foil and warm in the oven at 170°c for about 15 minutes or place them in a dry frying pan over medium heat for 10-15 seconds each side.
Prep your tacos - you want them to be ready so you can throw in the prawns as soon as they're cooked. Spoon a dollop of Guac into the middle of each tortilla and spread evenly. Top with a generous spoonful of slaw.
Heat a frying pan over medium heat (you can always use the same one for the tortillas to save on washing up!) and drizzle in a little olive oil. When the oil is hot, chuck in your prawns and give them a stir.
If you started with pre-cooked prawns then you really just want to warm them through - cook for about 3 minutes, stirring them round the pan. If your prawns are raw, you need to cook them till they turn fully pink - about 5 minutes.
As soon as your prawns are cooked, spoon them onto the prepped tortillas and drizzle with Taco Sauce.
Serve immediately with a squeeze of lime and a margarita!