To intensify their flavour, prepare the burger patties one day in advance and leave them in the fridge, covered with cling film. Take them out of the fridge 2 hours before you pan-fry them.
Metric kitchen scales are an inexpensive yet invaluable gadget to ensure accurate measurement of ingredients. Store them upright in a cupboard or over your worktop and they'll only take up a tiny bit of space. Click
HERE for the ones I use. For U.S. option click
HERE.