It is worth noting that the oil in the jar will take on the flavour and you can use this as well. For example, it makes an amazing french dressing (vinaigrette)
Remarks
You can use any herbs you like or have to hand. Similarly, the quantities of salt and oil are simply for guidance. If you take out some of the oil, be sure not to leave the lemons in the jar uncovered, or they will turn mouldy.
You can scald the herbs before using them, as in the herb olive oil recipe.