The "Heinz" is a 6 selection wager consisting of 57 bets: 15 doubles, 20 trebles, 15 four-folds, 6 five-folds and a 1 six-fold accumulator.
Named after the 57 varieties Heinz company slogan, this 57 bet wager is a full cover bet that combines every permutation of the 6 selections into a single wager. Each selection has the same effect on returns so the order in which they are added to the slip is inconsequential. It would take a lot of time and be error prone to work out returns by hand so its best to use a Heinz bet calculator tool after you understand the parts of this wager.
Experimenting with different outcomes can also help in understanding how one or two losing runners affects returns. When 2 or more selections win, a return is guaranteed. A €1/$1 Heinz bet costs €57/$57