Butter Cream for cake decorating

Here's the recipe:

• 500gr of shortening
• 500gr of unsalted butter
• 200gr condensed milk ( you can add more if you like)
• 1/4 teaspoon of salt
• 1 teaspoon vanilla essence
  
  

  Directions :
• In mixing bowl beat butter and shortening with low speed
• add in condensed milk, salt and vanilla essence and beat with medium speed ( around 30minutes plus or until its light and very smooth) - if you make butter cream for piping (example for making butter cream rose)dont beat too long coz you need a slightly thicker butter icing mixture , so you can easily making your rose petals. *_^
• Now you can add coloring to your butter cream