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Related Party Transactions - Additional Information (Details)	1 Months Ended	12 Months Ended
	Jan. 31, 2021 shares	Dec. 31, 2021 USD ($) Employee $ / shares shares	Dec. 31, 2020 USD ($) Employee $ / shares shares	Sep. 30, 2017 $ / shares shares
Related Party Transaction [Line Items]
Common stock, shares issued \| shares		38,960,716	1,768,325
Common stock, par value \| $ / shares		$ 0.0001	$ 0.0001
Number of employees \| Employee		1	2
Compensation related expense			$ 800,000
Amounts due to Nestlé, current—related party			5,675,000
Discontinued Operations
Related Party Transaction [Line Items]
Payment for collaboration expense			300,000
PLI
Related Party Transaction [Line Items]
Amounts due to Nestlé, current—related party			5,700,000
PLI \| Series D-2 Convertible Preferred Stock
Related Party Transaction [Line Items]
Business acquisition, number of shares issued \| shares	7,219,560
Nestle
Related Party Transaction [Line Items]
Amounts due to Nestlé, current—related party			5,700,000
Research and Development
Related Party Transaction [Line Items]
Compensation related expense		$ 800,000	600,000
Payment for collaboration expense		500,000
General and Administrative
Related Party Transaction [Line Items]
Compensation related expense			200,000
Cedars-Sinai Agreement \| Vested Common Stock \| Cedars-Sinai
Related Party Transaction [Line Items]
Common stock, shares issued \| shares				257,500
Common stock, par value \| $ / shares				$ 0.0001
Cedars-Sinai Agreement \| Unvested Restricted Common Stock \| Cedars-Sinai
Related Party Transaction [Line Items]
Common stock, shares issued \| shares				335,000
Common stock, par value \| $ / shares				$ 0.0001
Transition Services Agreement
Related Party Transaction [Line Items]
Payment for terms of agreement		$ 3,800,000
Transition Services Agreement \| PLI Spinoff
Related Party Transaction [Line Items]
Payout bonus liability			$ 1,100,000
Initial term of agreement			1 year