Dark-field microscopy-correlated single-particle Raman spectra were measured to verify the presence of Fano resonance and investigate its effect on SERS. A distinct Fano dip was clearly observed in the dark-field scattering spectrum (Figure , top). Polar plots, obtained by varying the laser polarisation direction for the same nano-Fanowman particle, exhibited symmetrical asymmetry (Figure , bottom). Raman spectra were measured from a total of 180 nano-Fanowman particles in a single dark-field microscopy image, using a linearly polarised laser at 500 nW (Fig. ). Other particle types were measured similarly (Fig. ), albeit with slightly higher laser powers, as 500 nW was insufficient to obtain signals from these particles. Representative Raman spectra from each particle type, including 50-nm AuNPs (as a control instead of non-resonant NNPs), are shown in Figure . The results demonstrate significant differences between the Fano-SERS signals from nano-Fanowman particles and the SERS signals from other particle structures. The distribution of SERS EFs for each particle type (Figure ) indicates that nano-Fanowman particles exhibit significantly higher EFs compared to others. To avoid overestimation, the single-molecule (SM) SERS EF method was employed . The broad EF distributions arise from the random dispersion and asymmetric geometry of snowman-shaped particles measured under linearly polarised excitation. Maximum and average EF values for each structure are summarised in Figure , reaching 3.9 × 10 8 (maximum) and 3.2 × 10 7 (average) for nano-Fanowman particles. This average EF closely matches the calculated expectation of 7.2 × 10 7 (Figure ). In terms of average EF, nano-Fanowman particles exhibit 7,400-fold and 77-fold higher enhancements compared to 50-nm AuNPs and resonant NNPs, respectively, highlighting a remarkable amplification despite their random orientation.