Mix the wet ingredients until smooth.
Stir in the dry ingredients, then fold in the grated carrots.
The batter should be very thick but spreadable. Add extra water 15g (1 tbsp) at a time only if needed.
Spread into a lined loaf pan and bake at 350°F (175°C) for 40–50 minutes. Cool completely.
Beat the frosting ingredients together, adding water gradually until thick and spreadable. Frost the cooled loaf.
