Measure all ingredients. Sift the almond meal, powdered sugar and cocoa powder.
Place egg whites in a bowl, whisk the egg whites on a medium speed until foamy.
Slowly add in the caster sugar.
Continue to beat until the egg whites are glossy and have stiff peaks. This may take a while.
Add in the red colouring and continue to whisk until the red is fully incorporated
Sift the almond meal mixture a second time into the meringue.
Slowly fold the dry ingredients into the meringue, until the batter flows of the spatula like lava and can form a figure 8 a few times without breaking.
Fill into a piping bag and pipe 1.5 inch (3.5cm) rounds onto baking paper or silicone mat.
Set aside to rest for 15-60 minutes, until a skin has formed on the macarons. Test by touching them with your finger, no batter should stick.
Heat oven to 150c/300F.
Place in the oven for 20 minutes. If your oven has heat spots, it is best to flip the pan every 5 minutes while baking.
Remove the macarons if they no longer move when pushed on their feet.