Cal. Bus. & Prof. Code § 23358

(a) Licensed winegrowers, notwithstanding any other provisions of this division, may also exercise the following privileges:
1. (1) Sell wine and brandy to any person holding a license authorizing the sale of wine or brandy.
2. (2) Sell wine and brandy to consumers for consumption off the premises where sold.
3. (3) Sell wine to consumers for consumption on the premises.
4. (4) Sell all beers, wines, and brandies, regardless of source, to consumers for consumption on the premises in a bona fide eating place as defined in Section 23038, which is located on the licensed premises or on premises owned by the licensee that are contiguous to the licensed premises and which is operated by and for the licensee. At such a bona fide public eating place, beer, wine, and brandy may be used in the preparation of food and beverages to be consumed on the premises.
5. (5)
  1. (A) Permit consumers to leave the premises with open containers of alcoholic beverages for consumption off the premises within an entertainment zone if all of the following conditions are satisfied:
    1. (i) The premises is located within the entertainment zone.
    2. (ii) Consumption of that type of alcoholic beverage is authorized by the ordinance creating the entertainment zone.
    3. (iii) Open alcohol containers only leave the premises during the hours allowed by the ordinance establishing the entertainment zone.
    4. (iv) Patrons with open containers exit the premises directly into an entertainment zone.
    5. (v) All alcoholic beverages in the entertainment zone are purchased only at a licensed premises located within the entertainment zone.
    6. (vi) The premises expressly prohibits open containers or closed containers of alcoholic beverages acquired outside their premises.
    7. (vii) Delivery of alcoholic beverages to consumers within the entertainment zone by the licensee or by any third-party delivery service is expressly prohibited unless the delivery is to a residential building or private business that is not a licensee.
    8. (viii) No alcoholic beverages purchased at the licensed premises may leave the premises in an open glass or metal container for consumption in an entertainment zone.
    9. (ix) The licensee annually submits their notice of intent to participate in an open container entertainment zone to the department.
  2. (B) This paragraph does not require a licensee to sell any alcoholic beverage for consumption off the premises within an entertainment zone.
  3. (C) Licensees whose privileges are restricted due to operating conditions or other statutory restrictions may be prohibited from exercising entertainment zone privileges that are contrary to their operating conditions. For purposes of this paragraph, any restrictions on the exercise of off-sale privileges shall not apply to the removal of open alcoholic beverages from the licensed premises for consumption in the entertainment zone.
6. (6) Produce spirits of wine and blend those spirits of wine into wine produced by the winegrower or sell those spirits of wine to an industrial alcohol dealer or any person holding a license authorizing the manufacture or rectification of distilled spirits.
7. (7) Possess and transport brandy for the purpose of storing the brandy to age on the winegrower’s premises.
(b) A winegrower may also have upon the premises all beers, wines, and brandies, regardless of source, for sale or service only to guests during private events or private functions not open to the general public. Alcoholic beverage products sold at the premises that are not produced and bottled by, or produced and packaged for, the winegrower shall be purchased by the winegrower only from a licensed wholesaler.
(c) A winegrower shall actually produce on the winegrower’s licensed premises by conversion of grapes, berries, or other fruit, into wine, not less than 50 percent of all wines sold to consumers on the winegrower’s licensed premises and any licensed branch premises.
(d) The department may, if it shall determine for good cause that the granting of any such privilege would be contrary to public welfare or morals, deny the right to exercise any on-sale privilege authorized by this section in either a bona fide eating place the main entrance to which is within 200 feet of a school or church, or on the licensed winery premises, or both.
(e) Nothing in this section or in Section 23390 is intended to alter, diminish, replace, or eliminate the authority of a county, city, or city and county from exercising land use regulatory authority by law to the extent the authority may restrict, but not eliminate, privileges afforded by these sections.