Adapted from a Facebook reel by Meals with Meg (copycat coffee-shop lemon loaf). Converted in the Test Kitchen to gluten-free with xanthan gum as the binder; a psyllium husk version is being tested alongside it. If your flour blend already contains xanthan, leave the added xanthan out. The bake temperature and time are the creator's; the serving count is Yael's estimate. Not yet test-baked.