Jim Cramer takes a look at the cannabis stocks after Attorney General Jeff Sessions resigned late Wednesday night. 

Pot stocks soared on the news, but seem to have calmed down in midday trading Thursday. 

Cramer thinks that investors interested in cannabis stocks should only focus on Canopy Growth (CGC) .

He also recounted his October interview with Canopy's CEO, Bruce Linton. 

Linton and Bill Newlands, COO of Constellation Brands (STZ) , both spoke at Cramer's teach-in about the future of cannabis and the two companies partnership to create cannabis-infused beverages. 

Investors interested in the conference can find a recap here

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