Butter, Spreadable, with Canola Oil, with Sea Salt, Tub 15 OZ With sea salt! Challenge Spreadable butter is made with 100% pure, real Challenge Butter blended with canola oil and flavored with sea salt so that it tastes great and spreads silky smooth even when cold. It's Challenge Spreadable Butter with a real difference. Real Challenge. Real Difference. Questions? Call toll free at 1-877-883-2479 or visit www.challangedairy.com. Must be refrigerated. Do not freeze. Best if used by date on package....