Add the lemon, honey, and almond extract and bring to a constant, rolling boil until it thickens, and you can feel it thicker to stir, about 20-25 minutes. Stir often to prevent sticking and scorching. You will see the jam thicken up toward the 20 minute mark, looking more viscous. You can jar it up and put it in the fridge or freezer, or water bath can it at this point! Recipe makes 4 of these 8oz jelly jars.