Every Wednesday or Saturday, offer a handful of Imli or tamarind in the nearest temple you know. If it is a Shiva temple, then you will see the results at a much faster pace.
Ketu is for sour and tangy food items too. So, avoiding these foods, especially junk food like chaat, bhel or golgappas, would be beneficial.
For Ketu in 2nd house for Taurus ascendant and others, travelling is also considered good. This could turn into a solution if you have a strong Ketu in the 2nd house.
As we discussed earlier, a strong Jupiter’s influence could ease out the Ketu ill-effects. So, offering yellow things like chana daal or haldi in a temple could be very helpful.