We also like ground chia seeds and flaxseeds in place of xanthan gum. In fact, these days, we grind up chia seeds and flaxseeds, combine them with psyllium husks in a jar, and pinch in a bit of this combination when we bake.
Oh, and if you want to make some of our older recipes, before we edit them all to be in grams and without the gums, simply replace any xanthan or guar gum you see with an equal measurement of psyllium, ground chia, or ground flaxseed.
Look at your grandmother’s recipe. Whenever it calls for 1 cup of gluten flour (or just, flour) substitute 140 grams of your favorite gluten-free all-purpose flour mix.