How can I make my carrot cake taste more carroty
You could try a few different tactics:


Use some roasted carrots. Roasting intensifies the flavour by removing water. Try not to brown them too much though, which will give them a burnt-sugar taste.
Use complimentary spices. Mace, which is the dried membrane that surrounds nutmeg, compliments and enhances the flavour of carrots very well. If you can't find mace, try nutmeg itself.
Reduce carrot juice. Simmer until syrupy and add to the cake. You might need a little more flour to compensate for the extra liquid.