I’m planning on making this in a tin that has 4 smaller loaves.. baking time?

I make a pumpkin gingerbread quick bread in 4 mini loaves. The amounts of the relevant ingredients are fairly similar to those in this burnt miso pound cake. I don't know what size / dimensions your mini loaf tins are, but that will certainly make a difference in the baking time. I would guess that these would take 25 minutes or more, but like drbabs, I'd start checking at 20 minutes.

Here are the instructions in my recipe, which apply to all mini-loaves that I make:

(I've inserted new text in brackets.)

Bake for 25 – 28 minutes - [but start checking at 20 minutes]. Check by touching the center of each loaf gently with your index finger. If it springs back up, the loaf is ready. If not, bake for another 2 – 3 minutes and check again [baking for 1-2 minutes more, as necessary]. [You could also use a cake tester. If the tester (or toothpick) comes out wet, the loaves need more time.] Remove from the oven, let cool in the pans for at least 5 minutes, and then gently remove to a cooling rack.

If you try this, please let us know how it turns out - and post the measurements of your mini loaf tins, too, for future reference. Thanks so much. ;o)

Hard to say, but I’d start checking at about 20 minutes.