Valpolicella Ripasso is a form of Valpolicella Superiore made with partially dried grape skins that have been left over from fermentation of Amarone or recioto. Winemaking in the region has existed since at least the time of the ancient Greeks.
Barium chloride, or any other barium salt, should burn with a green flame. When a barium salt is burned, the thermal energy is transferred to the outer electrons of the barium ions. They gain enough energy to excite them to a higher energy level. They then drop back to their ground state, releasing energy.
Water-soluble barium salts are toxic to humans. Potassium sulfate and magnesium sulfate are used as emergency treatments for barium chloride poisoning. These work by reacting with the barium chloride to form barium sulfate. Barium sulfate is less dangerous due to its insolubility in water.