|View static image|
|Pattern type||Strict still life|
|Number of cells||28|
|Year of discovery||Unknown|
O quad-loaf (or quad-loaf, or tetraloaf I, or bi-loaf tie bi-loaf) is a 28-cell still life composed of a tie of four loaves, and usually forms in a constellation with two half-bakeries as a result of two bakeries.
It is the most common 28-cell still life on Catagolue.