I think you have this type of cooker, right? I saw it in your post.

For rice, I cook in my rice cooker and mix with vinegar, sugar and salt. 20ml Vinegar, 5g sugar and 3g salt for 1 cup of rice. I use apple vinegar for conveniency but we use rice vinegar for sushi rice in Japan.

You can see shiitake mixed in the sushi rice in the third photo. But you are right ... there is no carrot in the photo 😅 It must be hiding somewhere. I used really a little from the rest of making the flower carrot.

Hope my answer helps you!