To prepare Garlic-Lemon Elixir – 2 lemons – 2 heads of garlic or 20 cloves – 1 liter of filtered or mineral water – sterilized bottles. To prepare Garlic-Lemon Elixir – 2 lemons – 2 heads of garlic or 20 cloves – 1 liter of filtered or mineral water – sterilized bottles.