Grapefruit Poppyseed Mini Bundt Cakes

Mini bundt Cakes:

• 1 1/2 cups all-purpose flour, plus extra for dusting pans
• 1/2 tsp baking powder
• 1/2 tsp baking soda
• 1/2 cup (8 tbsp / 1 stick) unsalted butter, room temperature
• 1/2 cup granulated sugar
• 2 large eggs, room temperature
• 1 medium grapefruit (preference for Rio or Red Grapefruit for colouring), with zest and juice separated
• 2 tbsp poppyseeds
• 1/2 cup milk (whole is preferred)

Icing:

• 1 cup icing (confectioners) sugar
• 1-2 tbsp fresh squeeze grapefruit juice