Best red velvet cake recipe with lemon butter frosting

Ingredients

• Refined flour 230gm
• 30 gm powdered sugar
• Baking powder 1 tbsp
• Baking soda 1/2 tsp
• condensed milk (1 tin)
• vanilla essence (1 tsp)
• oil or glycerine (2 tbsp)
• Liquid food color ,red(2 drops)
• Milk 100 ml
• Butter unsalted 100 gm
• 2 tbsp lemon juice
• 1 tsp lemon zest
• 100 gms butter
• 200 gm sugar
• 100 ml condensed milk