Stale bread will not make you sick. Chefs use it in recipes for croutons, breadcrumbs, etc. as long as there is no mold. Stale just means it's lost it's moisture. If it tastes OK to you, then eat up! = ) twofunnyboxers Â· 10 years ago.
Color. While knowing when to harvest Concord grapes is more about taste than color, Concord grapes will turn a telltale darker shade two to three weeks before peak harvest. The color can vary depending on where it is grown, with the standard deep blue-purple color slightly lighter in colder areas and darker in warmer climates.
For the best batch of organic grapes (Vitis), it is essential to pick the grapes when they are ripe. See below for ways you can test for ripeness. Tasting is the best test for maturity. If grapes are sweet and flavorful, they are ready to pick. The next best guide is color.