Mix butter, sour cream and olive oil with an electric mixer. Add one by one egg and keep mixing. Add baking soda and lemon juice.
At this point add all the spices and mix for another 30 seconds with a mixer.
Mix all the dry ingredients in another mixing bowl. (Sesame flour, flaxseed flour, psyllium or alternatives) Add them spoon by spoon to the wet ingredients and at this point start working the dough with your hands.
Leave the dough in the refrigerator for 10 minutes. After that grease your hands with olive oil and start making mini pieces of bread in the size of walnuts. Using a fork make the lines on top of your mini breads. Place them on a baking sheet lined with parchment paper.
Sprinkle with sesame seeds and tap them in so that they stick to the surface.
Bake for 15 minutes at 170ºC (338ºF) and then leave them in the oven without opening it until they are cool enough to take them out with your fingers.