Moist is always better. Aren't you just disappointed when your bola-bola turns out to be dry? The secret actually is in the extender. Thanks Tita Ging for the tip!
1/4 kilo of ground beef
one head grated garlic
one whole white onion
1/4 cup grated carrots
1/4 cup minced spring onions
4-5 slices of bread, sides removed
1-2 cups of milk, depending on the size of your bread.
(note: you want your bread to be soaked in milk but not dripping)
Mix everything in a bowl and allow to sit in the ref for 20 minutes before molding. Fry in heated oil until both sides are golden brown.