1/2 cup of oil of choice, or enough oil to cover pan to a depth of 1/2 inch (I like avocado oil or extra virgin olive oil)
Peel and grate the potatoes (you can use a food processor or grate by hand) then place in a bowl of cold water and set aside.
Peel and grate the onions.
Add both grated mixture to a fine mesh strainer lined with a cheese cloth if you have, and strain as much excess water out as possible.
Place strained mixture into a large bowl. Mince garlic and add it to the bowl with the potato and onion.
Add in the eggs, arrowroot flour/starch, salt and pepper. Mix well.
Place 1/2 cup of oil into a large pan and heat the oil on medium-high heat.
Once oil is hot, make patties out of the potato mixture (squeeze out even more excess liquid as you make patties) and pan-fry until brown on both sides. Should take about 3-4 minutes on each side but watch closely to avoid burning. Add more oil as needed.