Six Sisters Slow Cooker Carne Asada Steak Tacos (with Chipotle Aioli Sauce). This is one tasty recipe! Had some beef I needed to cook so I tried this out and it tasted great! I used some salsa I had leftover, Cantina selection by Tostito, made it pretty spicy. I think I just ate it plain by itself. Would like to make it for tacos if I made it again.