Conversation so far:
What business was Newsom involved in?
Newsom and his investors created the company PlumpJack Associates L.P.
What did this company do?
the group started the PlumpJack Winery with the financial help of his family friend Gordon Getty.
Was the winery successful?
According to Getty, later business investments were because of "the success of the first..
Was he involved in other businesses?
The PlumpJack Cafe Partners L.P.
opened the PlumpJack Cafe, also on Fillmore Street, in 1993.
Did the cafe do well?
CANNOTANSWER.
Are there any other interesting aspects about this article?
Newsom and his investors opened several other businesses.
Please name one of those?
PlumpJack Squaw Valley Inn with a PlumpJack Cafe (1994), the Napa Valley winery (1995).

Question: How was he involved in those businesses?
Self-contained rewrite: How was Newsom involved in PlumpJack Squaw Valley Inn and PlumpJack Cafe?