Blue Raspberry sour straws Shortfill 100ml E-Liquid by Bazooka Nothing makes a sweet flavour come through more deliciously than a sour counterpoint and that's the idea behind Blue Raspberry Sour Straws by Bazooka. Tasting like a soft blue raspberry candy with a sour powder on the outside, this e-liquid is a must if you're craving a blue raspberry flavour with a sour edge.The mix is 70% VG / 30% PG.