The arms show a red reef knot on a gray background.
Many roasts are tied with string prior to roasting, often using the reef knot or the packer's knot.
It is one of the four basic maritime knots (the other three are figure-eight knot, reef knot and clove hitch).
A reef knot is formed by tying a left-handed overhand knot and then a right-handed overhand knot, or vice versa.
It is considered inferior to the reef knot (square knot), which it superficially resembles.
The reef knot is commonly taught as "left over right, tuck under" then "right over left, tuck under".
It is a more secure replacement for the reef knot (square knot), especially in its doubled variety.
The shoelace knot is a doubly slipped reef knot, the original being far harder to undo.
