Any researchers who have never wondered about the connection between MRI and baking cinnamon rolls. Over the past decade, new sampling strategies in conjunction with parallel imaging [Pruessmann 1999, Griswold 2002] have revolutionised the way we do MRI. A significant push has recently come from so-called CAIPIRINHA techniques [Breuer 2005, 2006, Setsompop 2012] and their combination with non-Cartesian approaches [Bilgic 2015, Zahneisen 2013], which allow for remarkable improvements in scan efficiency and image quality, in both volumetric and simultaneous multi-slice imaging. The secret of CAIPIRINHA lies in the careful and elegant placement of sampling points in k-space. The original goal of this study was to exploit our positive experiences with such advanced sampling in MRI in the baking of Scandinavian style cinnamon rolls. In this specific example we aimed to maximise the throughput (bake many buns per hour), and to guarantee an esthetically pleasing end-result (no sticking together, nice beautiful shape etc). During the experiment, the suspicion arose that the celebrated art of placing sample points in modern MRI may itself actually have been inspired by old wisdom and skills from unrelated research fields or real-life situations. For instance, early records evidence the pondering about how to best stack cannon balls (1580’s), or atomic arrangements in crystals (1930’s). The Wuerzburg group has also on several accounts demonstrated the transferability of drinking related skills to MRI acquisition. Importantly for this study, we see indications that baking skills of CAIPIRINHA and spiral developers (or possibly their spouses, relatives or friends), are highly transferable to MRI and may have contributed significantly to the state-of-the-art in MRI. If true, this would severely undermine the originality and purpose of this study, which was attempting the opposite. While this chicken-and-egg problem was not easily resolved by a mini-survey of literature and pictorial evidence, it became clear that both fields share the same principles and challenges. Baking was performed in a standard home kitchen with 2.5 kW Siemens convection oven (Fig 1a); other hardware is summarised in Fig. 1b. All activities were approved by the ruling housewife. Dough was prepared by mixing the ingredients (Fig 1c) according to ref [Oma Gaby, timeless]. The flattened dough was covered with butter, sugar and cinnamon and rolled up into spiral shape [Glover 1997], before cutting into 1.5cm slices and placing them on a baking tray as described in [Breuer 2006] and shown in Fig 2a, for an expected “rolls-per-tray” ratio benefit of sqrt(2) compared to naïve rectilinear placement. The spiral at each position then yielded the intended wave-CAIPI [Bilgic 2015] arrangement (Fig 2b). Baking time was 7min (parallel baking = 2 trays.) During the study we briefly explored applicability of compressed sensing (Fig 2c). While experts who master the complexities of such advanced reconstructions may find this funny (Lustig 2007), it actually caused a mess in our setup (Fig 2c) so it was not pursued further.The result of the CAIPIRINHA baking is shown in Fig 3. Baking was completed with 8 trays (4 oven-loads) instead of the typical 11 (6 oven-loads). No damage from sticking-together was observed, indicating a proper spacing between rolls. The rolls were rated for quality by the household members and some neighbours, and were considered tasty and overall eye-pleasing. A repeated point of criticism was the deviation from true spiral shape (Fig 3b,c), as also well known from scanner gradient imperfections (Fig 3d, [Duyn 1998]). Notably, baking reduces the shape distortion (3c vs. 3b). The survey of parallel imaging literature and picture evidence from the world-wide-web revealed intriguing analogies, briefly summarised in Fig 4. This includes an early but very still poor attempt of wave-CAIPI baking that could be dated back to April 2012 (Fig 4e).We have successfully applied CAIPIRINHA principles to the baking of cinnamon buns, and highly recommend this approach. The novelty of this however can be questioned, as we may have taken CAIPIRINHA back to where it came from. This remains an open question after a small investigation that shows strong analogies between tray baking and MR sampling. The findings indicate that important cross-fertilisation takes place between the two domains, and that better exploitation of these synergies can help in the shared endeavours to tackle obdurate challenges like trajectory imperfections, or simply to get beautiful results more quickly. It is hence also not unreasonable to assume that progress in MRI methodology can benefit from researchers spending more time at home with their significant others, and particularly in the kitchen.