  We propose a method to use lattice QCD to compute the Borel transform of the
vacuum polarization function appearing in the Shifman-Vainshtein-Zakharov (SVZ)
QCD sum rule. We construct the spectral sum corresponding to the Borel
transform from two-point functions computed on the Euclidean lattice. As a
proof of principle, we compute the $s \bar{s}$ correlators at three lattice
spacings and take the continuum limit. We confirm that the method yields
results that are consistent with the operator product expansion in the large
Borel mass region. The method provides a ground on which the OPE analyses can
be directly compared with non-perturbative lattice computations.
