Pour the concentrated stock with water (or broth) into a pot. Add the garlic as well and wait for it to cook.
Pour in the polenta and season with salt and pepper.
Keep on low heat and stir frequently. The mixture will cook very quickly and it can burn quickly as well so keep on stirring with a whisk until it starts to pop out and it is thick enough.
Take from the heat and spread the still soft polenta onto a previously laid out parchment paper. It should be about ½ inch thick.
Once it's cooled and hard, cut out the squares. (sticks or any other shape if you like)
Heat up a pan with the Oil and pan fry the polenta squares until golden brown crisp.
Best served with tomato based dishes. See recommendation in post above.