what is cream of tartar

{"title":"China mygou Wholesale High quality low price Angel cake For All Ages HACCP Certification in 150g","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/1d\/db\/849fb299737971607f4a9e10f01c-200x200-1.jpg","attrs":{"Price":"Negotiable","Brand Name":"Mygou Foods","Minimum Order Quantity":"10 paper box","Delivery Time":"15 days","Certification":"HALAL,HACCP","Place of Origin":"China","Payment Terms":"L\/C, T\/T, Western Union, MoneyGram","Supply Ability":"500 tons per month","Packaging Details":"peper box","Brand":"Mygou Foods","Name":"Angel cake","Package":"Portable package","OEM":"Welcome to consult","Shelflife":"24 months"}}

{"title":"Computer PLC Control 6000ml Sauce Sachet Packing Machine","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/07\/c4\/bd79063373b1f2ff2cf9dc658cea-200x200-1.jpg","attrs":{"Price":"Negotiable","Brand Name":"Shilong","Model Number":"SLIV-520\/620","Minimum Order Quantity":"Negotiable","Delivery Time":"100 Set\/Month","Certification":"CE","Place of Origin":"China","Payment Terms":"D\/A, D\/P, T\/T, Western Union, MoneyGram","Supply Ability":"15-25\/day","Packaging Details":"1400 * 1000 * 1500mm","Packing material":"OPP \/ CPP OPP \/ CE PET \/ PE ( etc complex film )","Bag-making size":"400mm ( L )","Packing speed":"5 - 60 ( bags \/ min )","Max width of film roll":"520mm","Measuring range":"6000ml","Air consumption":"0.65mpa","Gas consumption":"0.7m3 \/ min","Power":"4KW","Product size":"1400 * 1000 * 1500mm","Product weight":"500Kg"}}