I think you may be triple confusing SweetTarts™ (chalky semi-tart disks) with Smarties™ (chalky sweet but oddly flavorless disks) and Spree™ (not as chalky, candy coated disks) which these days are more often encountered as Chewy Spree™ (Chewy candy coated disks.)

And we haven’t even mentioned Necco Wafers™ (big ol’ chalky disks) nor Giant SweetTarts™ (big ol’ semi-tart chewy disks)!