Over a bowl, sprinkle salt inside each lemon, rubbing salt into lemon pulp. Then reshape lemons and place them inside jar. Using a wooden spoon or tamper, smash the five lemons until they release their juices and soften. This will form the brine. Add cinnamon stick, bay leaf, peppercorns and chile pepper slices. Slice remaining five whole lemons the same way, sprinkling salt inside each one, and add to the jar. Add the 2 tablespoons lemon juice and any remaining salt; then smash lemons some more with wooden spoon. (TIP: If lemons are not fully submerged under the lemon juice brine, add enough saltwater to cover and use glass weights to keep them submerged.)