Whisk 200g Salted butter for 5-8 minutes using hand or stand mixer (I use the whisk attachment) until the butter is very light in colour. Stop the mixer and scrape down the sides of the bowl every couple of minutes to ensure that the butter whisks up evenly.
200 g Salted Butter
Add in 300g Icing Sugar, 1/4 tsp salt if using and 2tbsp Double Cream. Whisk for another 5 minutes until light and fluffy
300 g Icing Sugar (Confectioners Sugar)
Add the Vanilla Bean Paste and 1-2tbsp more double cream and whisk for 1 more minute
6 tbsp Double (heavy) cream, 1 tbsp Vanilla Bean Pate (or Vanilla Extract)
If you are using food colour add it now and whisk again until combined
Food Colour (optional)
Put the buttercream into a piping bag with required nozzle and fill your Macs!