Add nut milk mixture and lemon juice to eggs and honey and beat again, and then stir in the lemon zest by hand.
Ladle the budino mixture evenly into the bowls, stirring with the ladle to blend as you go, so all the bowls will have the same mixture of ingredients, as the foamier part tends to float to the top.
Carefully pour the previously boiled hot water into the pan until it reaches about 1 inch up the sides of the bowls.
*If you would like to make this low oxalate, use coconut milk instead of almond milk. You can use 1/4 cup of all-purpose einkorn or regular flour in place of the nuts (or 1-2 tbsp corn starch); 1/4 cup of einkorn flour has approximately 4.5mg of oxalates, whereas the same amount of almond flour has approximately 145mg. While lemon juice is low, I couldn't find any information about lemon zest, so if you're concerned about that, you could leave it out. All the other ingredients are low (eggs, honey, salt, lemon juice).